811731824152 has 8 divisors (see below), whose sum is σ = 1521997170300. Its totient is φ = 405865912072.

The previous prime is 811731824131. The next prime is 811731824171. The reversal of 811731824152 is 251428137118.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×811731824152² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 811731824099 and 811731824108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50733239002 + ... + 50733239017.

Almost surely, 2^811731824152 is an apocalyptic number.

It is an amenable number.

811731824152 is a deficient number, since it is larger than the sum of its proper divisors (710265346148).

811731824152 is a wasteful number, since it uses less digits than its factorization.

811731824152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101466478025 (or 101466478021 counting only the distinct ones).

The product of its digits is 107520, while the sum is 43.

The spelling of 811731824152 in words is "eight hundred eleven billion, seven hundred thirty-one million, eight hundred twenty-four thousand, one hundred fifty-two".