61880020670 has 64 divisors (see below), whose sum is σ = 121407745536. Its totient is φ = 22572301440.

The previous prime is 61880020661. The next prime is 61880020691. The reversal of 61880020670 is 7602008816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3857807 + ... + 3873813.

It is an arithmetic number, because the mean of its divisors is an integer number (1896996024).

Almost surely, 2^61880020670 is an apocalyptic number.

61880020670 is a deficient number, since it is larger than the sum of its proper divisors (59527724866).

61880020670 is a wasteful number, since it uses less digits than its factorization.

61880020670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16385.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 61880020670 in words is "sixty-one billion, eight hundred eighty million, twenty thousand, six hundred seventy".