812562927542 has 4 divisors (see below), whose sum is σ = 1218844391316. Its totient is φ = 406281463770.

The previous prime is 812562927529. The next prime is 812562927557. The reversal of 812562927542 is 245729265218.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×812562927542² (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 as a sum of consecutive naturals, namely, 203140731884 + ... + 203140731887.

It is an arithmetic number, because the mean of its divisors is an integer number (304711097829).

Almost surely, 2^812562927542 is an apocalyptic number.

812562927542 is a deficient number, since it is larger than the sum of its proper divisors (406281463774).

812562927542 is a wasteful number, since it uses less digits than its factorization.

812562927542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406281463773.

The product of its digits is 4838400, while the sum is 53.

The spelling of 812562927542 in words is "eight hundred twelve billion, five hundred sixty-two million, nine hundred twenty-seven thousand, five hundred forty-two".