61880776939 has 8 divisors (see below), whose sum is σ = 62044826688. Its totient is φ = 61716862920.

The previous prime is 61880776931. The next prime is 61880777003. The reversal of 61880776939 is 93967708816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61880776939 - 2³ = 61880776931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61880776931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913924 + ... + 979294.

It is an arithmetic number, because the mean of its divisors is an integer number (7755603336).

Almost surely, 2^61880776939 is an apocalyptic number.

61880776939 is a deficient number, since it is larger than the sum of its proper divisors (164049749).

61880776939 is a wasteful number, since it uses less digits than its factorization.

61880776939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67865.

The product of its (nonzero) digits is 27433728, while the sum is 64.

The spelling of 61880776939 in words is "sixty-one billion, eight hundred eighty million, seven hundred seventy-six thousand, nine hundred thirty-nine".