79877955895 has 8 divisors (see below), whose sum is σ = 95865518880. Its totient is φ = 63894383520.

The previous prime is 79877955889. The next prime is 79877955923. The reversal of 79877955895 is 59855977897.

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

It is not a de Polignac number, because 79877955895 - 2²¹ = 79875858743 is a prime.

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, 953436 + ... + 1033825.

It is an arithmetic number, because the mean of its divisors is an integer number (11983189860).

Almost surely, 2^79877955895 is an apocalyptic number.

79877955895 is a deficient number, since it is larger than the sum of its proper divisors (15987562985).

79877955895 is a wasteful number, since it uses less digits than its factorization.

79877955895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995305.

The product of its digits is 2000376000, while the sum is 79.

The spelling of 79877955895 in words is "seventy-nine billion, eight hundred seventy-seven million, nine hundred fifty-five thousand, eight hundred ninety-five".