813430497972 has 12 divisors (see below), whose sum is σ = 1898004495296. Its totient is φ = 271143499320.

The previous prime is 813430497959. The next prime is 813430498003. The reversal of 813430497972 is 279794034318.

It is a happy number.

813430497972 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×813430497972² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33892937404 + ... + 33892937427.

Almost surely, 2^813430497972 is an apocalyptic number.

It is an amenable number.

813430497972 is an abundant number, since it is smaller than the sum of its proper divisors (1084573997324).

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

813430497972 is a wasteful number, since it uses less digits than its factorization.

813430497972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67785874838 (or 67785874836 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 813430497972 in words is "eight hundred thirteen billion, four hundred thirty million, four hundred ninety-seven thousand, nine hundred seventy-two".