426523506602642 has 16 divisors (see below), whose sum is σ = 655391032904664. Its totient is φ = 208059848880000.

The previous prime is 426523506602629. The next prime is 426523506602659. The reversal of 426523506602642 is 246206605325624.

It can be written as a sum of positive squares in 4 ways, for example, as 383972686038841 + 42550820563801 = 19595221^2 + 6523099^2 .

It is a super-2 number, since 2×426523506602642² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40659392 + ... + 50062292.

Almost surely, 2^{426523506602642} is an apocalyptic number.

426523506602642 is a deficient number, since it is larger than the sum of its proper divisors (228867526302022).

426523506602642 is a wasteful number, since it uses less digits than its factorization.

426523506602642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9956125.

The product of its (nonzero) digits is 24883200, while the sum is 53.

The spelling of 426523506602642 in words is "four hundred twenty-six trillion, five hundred twenty-three billion, five hundred six million, six hundred two thousand, six hundred forty-two".