345444430881 has 16 divisors (see below), whose sum is σ = 505547239680. Its totient is φ = 208075839120.

The previous prime is 345444430861. The next prime is 345444430949. The reversal of 345444430881 is 188034444543.

It is not a de Polignac number, because 345444430881 - 2¹³ = 345444422689 is a prime.

It is a super-2 number, since 2×345444430881² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 345444430881.

It is not an unprimeable number, because it can be changed into a prime (345444430861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32105091 + ... + 32115848.

It is an arithmetic number, because the mean of its divisors is an integer number (31596702480).

Almost surely, 2^345444430881 is an apocalyptic number.

It is an amenable number.

345444430881 is a deficient number, since it is larger than the sum of its proper divisors (160102808799).

345444430881 is a wasteful number, since it uses less digits than its factorization.

345444430881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64221116.

The product of its (nonzero) digits is 2949120, while the sum is 48.

The spelling of 345444430881 in words is "three hundred forty-five billion, four hundred forty-four million, four hundred thirty thousand, eight hundred eighty-one".