61761877412 has 12 divisors (see below), whose sum is σ = 108205144320. Its totient is φ = 30846121896.

The previous prime is 61761877409. The next prime is 61761877469. The reversal of 61761877412 is 21477816716.

61761877412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8700212 + ... + 8707307.

It is an arithmetic number, because the mean of its divisors is an integer number (9017095360).

Almost surely, 2^61761877412 is an apocalyptic number.

It is an amenable number.

61761877412 is a deficient number, since it is larger than the sum of its proper divisors (46443266908).

61761877412 is a wasteful number, since it uses less digits than its factorization.

61761877412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17408410 (or 17408408 counting only the distinct ones).

The product of its digits is 790272, while the sum is 50.

The spelling of 61761877412 in words is "sixty-one billion, seven hundred sixty-one million, eight hundred seventy-seven thousand, four hundred twelve".