426243523955931 has 20 divisors (see below), whose sum is σ = 694619076077784. Its totient is φ = 258329408457600.

The previous prime is 426243523955927. The next prime is 426243523955981. The reversal of 426243523955931 is 139559325342624.

426243523955931 is a `hidden beast` number, since 4 + 2 + 6 + 2 + 4 + 3 + 5 + 2 + 39 + 5 + 593 + 1 = 666.

It is not a de Polignac number, because 426243523955931 - 2² = 426243523955927 is a prime.

It is a super-2 number, since 2×426243523955931² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (426243523955981) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 239193895830 + ... + 239193897611.

Almost surely, 2^{426243523955931} is an apocalyptic number.

426243523955931 is a deficient number, since it is larger than the sum of its proper divisors (268375552121853).

426243523955931 is a wasteful number, since it uses less digits than its factorization.

426243523955931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478387793464 (or 478387793455 counting only the distinct ones).

The product of its digits is 209952000, while the sum is 63.

The spelling of 426243523955931 in words is "four hundred twenty-six trillion, two hundred forty-three billion, five hundred twenty-three million, nine hundred fifty-five thousand, nine hundred thirty-one".