521140031142355 has 16 divisors (see below), whose sum is σ = 635630224856544. Its totient is φ = 410070787073280.

The previous prime is 521140031142331. The next prime is 521140031142359. The reversal of 521140031142355 is 553241130041125.

It is a de Polignac number, because none of the positive numbers 2^k-521140031142355 is a prime.

It is a super-3 number, since 3×521140031142355³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521140031142359) 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, 5202684 + ... + 32700886.

It is an arithmetic number, because the mean of its divisors is an integer number (39726889053534).

Almost surely, 2^{521140031142355} is an apocalyptic number.

521140031142355 is a deficient number, since it is larger than the sum of its proper divisors (114490193714189).

521140031142355 is a wasteful number, since it uses less digits than its factorization.

521140031142355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27560406.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 521140031142355 in words is "five hundred twenty-one trillion, one hundred forty billion, thirty-one million, one hundred forty-two thousand, three hundred fifty-five".