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93672111481 = 13418112
BaseRepresentation
bin101011100111101001…
…0101111110101111001
322221210011121022002021
41113033102233311321
53013320030031411
6111010554234441
76524165544634
oct1271722576571
9287704538067
1093672111481
11367a9512873
12161a2725a21
138aaa830000
14476889cc1b
152683934a71
hex15cf4afd79

93672111481 has 15 divisors (see below), whose sum is σ = 101533912553. Its totient is φ = 86418819240.

The previous prime is 93672111479. The next prime is 93672111509. The reversal of 93672111481 is 18411127639.

It is a happy number.

The square root of 93672111481 is 306059.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 46444129081 + 47227982400 = 215509^2 + 217320^2 .

It is not a de Polignac number, because 93672111481 - 21 = 93672111479 is a prime.

It is a super-2 number, since 2×936721114812 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93672111581) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 51723066 + ... + 51724876.

Almost surely, 293672111481 is an apocalyptic number.

93672111481 is the 306059-th square number.

93672111481 is the 153030-th centered octagonal number.

It is an amenable number.

93672111481 is a deficient number, since it is larger than the sum of its proper divisors (7861801072).

93672111481 is an frugal number, since it uses more digits than its factorization.

93672111481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674 (or 1824 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The spelling of 93672111481 in words is "ninety-three billion, six hundred seventy-two million, one hundred eleven thousand, four hundred eighty-one".

Divisors: 1 13 169 1811 2197 23543 28561 306059 3279721 3978767 42636373 51723971 554272849 7205547037 93672111481