420391651756 has 12 divisors (see below), whose sum is σ = 736373597680. Its totient is φ = 209999195280.

The previous prime is 420391651751. The next prime is 420391651759. The reversal of 420391651756 is 657156193024.

It is a super-2 number, since 2×420391651756² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (420391651751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49152840 + ... + 49161391.

Almost surely, 2^420391651756 is an apocalyptic number.

It is an amenable number.

420391651756 is a deficient number, since it is larger than the sum of its proper divisors (315981945924).

420391651756 is a wasteful number, since it uses less digits than its factorization.

420391651756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98315304 (or 98315302 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 420391651756 in words is "four hundred twenty billion, three hundred ninety-one million, six hundred fifty-one thousand, seven hundred fifty-six".