451020079636 has 12 divisors (see below), whose sum is σ = 902040159328. Its totient is φ = 193294319832.

The previous prime is 451020079621. The next prime is 451020079669. The reversal of 451020079636 is 636970020154.

451020079636 is an admirable number.

It is a super-2 number, since 2×451020079636² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 451020079592 and 451020079601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8053929966 + ... + 8053930021.

Almost surely, 2^451020079636 is an apocalyptic number.

It is an amenable number.

451020079636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

451020079636 is a wasteful number, since it uses less digits than its factorization.

451020079636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16107859998 (or 16107859996 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 451020079636 in words is "four hundred fifty-one billion, twenty million, seventy-nine thousand, six hundred thirty-six".