426995363640 has 64 divisors (see below), whose sum is σ = 1281834408960. Its totient is φ = 113790024320.

The previous prime is 426995363609. The next prime is 426995363647. The reversal of 426995363640 is 46363599624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426995363647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 996144 + ... + 1358783.

It is an arithmetic number, because the mean of its divisors is an integer number (20028662640).

Almost surely, 2^426995363640 is an apocalyptic number.

426995363640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426995363640 is an abundant number, since it is smaller than the sum of its proper divisors (854839045320).

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

426995363640 is a wasteful number, since it uses less digits than its factorization.

426995363640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356452 (or 2356448 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 57.

The spelling of 426995363640 in words is "four hundred twenty-six billion, nine hundred ninety-five million, three hundred sixty-three thousand, six hundred forty".