61238626812 has 72 divisors (see below), whose sum is σ = 170102932272. Its totient is φ = 18421689600.

The previous prime is 61238626759. The next prime is 61238626847. The reversal of 61238626812 is 21862683216.

61238626812 is a `hidden beast` number, since 6 + 1 + 2 + 3 + 8 + 626 + 8 + 12 = 666.

61238626812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 510139 + ... + 618642.

It is an arithmetic number, because the mean of its divisors is an integer number (2362540726).

Almost surely, 2^61238626812 is an apocalyptic number.

It is an amenable number.

61238626812 is an abundant number, since it is smaller than the sum of its proper divisors (108864305460).

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

61238626812 is a wasteful number, since it uses less digits than its factorization.

61238626812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128939 (or 1128934 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The spelling of 61238626812 in words is "sixty-one billion, two hundred thirty-eight million, six hundred twenty-six thousand, eight hundred twelve".