345455044255521 has 32 divisors (see below), whose sum is σ = 522235890288000. Its totient is φ = 225627219745344.

The previous prime is 345455044255507. The next prime is 345455044255523. The reversal of 345455044255521 is 125552440554543.

345455044255521 is a `hidden beast` number, since 3 + 4 + 5 + 4 + 5 + 50 + 44 + 25 + 5 + 521 = 666.

It is not a de Polignac number, because 345455044255521 - 2¹³ = 345455044247329 is a prime.

It is a super-2 number, since 2×345455044255521² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345455044255523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369598366 + ... + 370531863.

It is an arithmetic number, because the mean of its divisors is an integer number (16319871571500).

Almost surely, 2^{345455044255521} is an apocalyptic number.

It is an amenable number.

345455044255521 is a deficient number, since it is larger than the sum of its proper divisors (176780846032479).

345455044255521 is a wasteful number, since it uses less digits than its factorization.

345455044255521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740130590 (or 740130584 counting only the distinct ones).

The product of its (nonzero) digits is 48000000, while the sum is 54.

The spelling of 345455044255521 in words is "three hundred forty-five trillion, four hundred fifty-five billion, forty-four million, two hundred fifty-five thousand, five hundred twenty-one".