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13460815081 = 73751972259
BaseRepresentation
bin11001000100101001…
…11011110011101001
31021202002220020220201
430202110323303221
5210031432040311
610103411552201
7654400016560
oct144224736351
937662806821
1013460815081
11578830866a
122737bbb661
1313669b724c
14919a40bd7
1553bb299c1
hex32253bce9

13460815081 has 8 divisors (see below), whose sum is σ = 15799567040. Its totient is φ = 11226007728.

The previous prime is 13460815037. The next prime is 13460815129. The reversal of 13460815081 is 18051806431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13460815081 - 227 = 13326597353 is a prime.

It is a super-2 number, since 2×134608150812 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13460815081.

It is not an unprimeable number, because it can be changed into a prime (13460819081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25985871 + ... + 25986388.

It is an arithmetic number, because the mean of its divisors is an integer number (1974945880).

Almost surely, 213460815081 is an apocalyptic number.

It is an amenable number.

13460815081 is a deficient number, since it is larger than the sum of its proper divisors (2338751959).

13460815081 is an equidigital number, since it uses as much as digits as its factorization.

13460815081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51972303.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 13460815081 in words is "thirteen billion, four hundred sixty million, eight hundred fifteen thousand, eighty-one".

Divisors: 1 7 37 259 51972259 363805813 1922973583 13460815081