61939073412 has 48 divisors (see below), whose sum is σ = 160619598720. Its totient is φ = 20641624416.

The previous prime is 61939073411. The next prime is 61939073431. The reversal of 61939073412 is 21437093916.

61939073412 is a `hidden beast` number, since 61 + 93 + 90 + 7 + 3 + 412 = 666.

61939073412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61939073411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424353 + ... + 551319.

It is an arithmetic number, because the mean of its divisors is an integer number (3346241640).

Almost surely, 2^61939073412 is an apocalyptic number.

It is an amenable number.

61939073412 is an abundant number, since it is smaller than the sum of its proper divisors (98680525308).

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

61939073412 is a wasteful number, since it uses less digits than its factorization.

61939073412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131497 (or 131489 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 61939073412 in words is "sixty-one billion, nine hundred thirty-nine million, seventy-three thousand, four hundred twelve".