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145219938357 = 31317321523631
BaseRepresentation
bin1000011100111111001…
…0000110100000110101
3111212211121221020000110
42013033302012200311
54334402301011412
6150414011133233
713330454052324
oct2071762064065
9455747836013
10145219938357
115665096208a
1224189a44219
1310904169210
1470589c20bb
153b9e11ed3c
hex21cfc86835

145219938357 has 16 divisors (see below), whose sum is σ = 209726270208. Its totient is φ = 88849544640.

The previous prime is 145219938341. The next prime is 145219938421. The reversal of 145219938357 is 753839912541.

It is a happy number.

It is not a de Polignac number, because 145219938357 - 24 = 145219938341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145219938297 and 145219938306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145219930357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10755069 + ... + 10768562.

It is an arithmetic number, because the mean of its divisors is an integer number (13107891888).

Almost surely, 2145219938357 is an apocalyptic number.

It is an amenable number.

145219938357 is a deficient number, since it is larger than the sum of its proper divisors (64506331851).

145219938357 is a wasteful number, since it uses less digits than its factorization.

145219938357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21523820.

The product of its digits is 8164800, while the sum is 57.

The spelling of 145219938357 in words is "one hundred forty-five billion, two hundred nineteen million, nine hundred thirty-eight thousand, three hundred fifty-seven".

Divisors: 1 3 13 39 173 519 2249 6747 21523631 64570893 279807203 839421609 3723588163 11170764489 48406646119 145219938357