426440565044624 has 160 divisors (see below), whose sum is σ = 972564815867904. Its totient is φ = 179256638545920.

The previous prime is 426440565044609. The next prime is 426440565044629.

It is a happy number.

426440565044624 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×426440565044624² (a number of 30 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 426440565044624.

It is not an unprimeable number, because it can be changed into a prime (426440565044629) 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, 2470987202 + ... + 2471159774.

Almost surely, 2^{426440565044624} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426440565044624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486282407933952).

426440565044624 is an abundant number, since it is smaller than the sum of its proper divisors (546124250823280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

426440565044624 is a wasteful number, since it uses less digits than its factorization.

426440565044624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195185 (or 195179 counting only the distinct ones).

The product of its (nonzero) digits is 88473600, while the sum is 56.

The spelling of 426440565044624 in words is "four hundred twenty-six trillion, four hundred forty billion, five hundred sixty-five million, forty-four thousand, six hundred twenty-four".