61377989336 has 64 divisors (see below), whose sum is σ = 122238720000. Its totient is φ = 28829760256.

The previous prime is 61377989297. The next prime is 61377989341. The reversal of 61377989336 is 63398977316.

61377989336 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 15 ways as a sum of consecutive naturals, for example, 15619820 + ... + 15623748.

It is an arithmetic number, because the mean of its divisors is an integer number (1909980000).

Almost surely, 2^61377989336 is an apocalyptic number.

It is an amenable number.

61377989336 is a deficient number, since it is larger than the sum of its proper divisors (60860730664).

61377989336 is a wasteful number, since it uses less digits than its factorization.

61377989336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5456 (or 5452 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 62.

The spelling of 61377989336 in words is "sixty-one billion, three hundred seventy-seven million, nine hundred eighty-nine thousand, three hundred thirty-six".