61879436760 has 32 divisors (see below), whose sum is σ = 185638310640. Its totient is φ = 16501183104.

The previous prime is 61879436713. The next prime is 61879436771. The reversal of 61879436760 is 6763497816.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61879436760.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257830867 + ... + 257831106.

Almost surely, 2^61879436760 is an apocalyptic number.

61879436760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61879436760 is an abundant number, since it is smaller than the sum of its proper divisors (123758873880).

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

61879436760 is a wasteful number, since it uses less digits than its factorization.

61879436760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515661987 (or 515661983 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 61879436760 in words is "sixty-one billion, eight hundred seventy-nine million, four hundred thirty-six thousand, seven hundred sixty".