78298176877 has 16 divisors (see below), whose sum is σ = 79888384000. Its totient is φ = 76725033840.

The previous prime is 78298176841. The next prime is 78298176889. The reversal of 78298176877 is 77867189287.

It is a de Polignac number, because none of the positive numbers 2^k-78298176877 is a prime.

It is a super-2 number, since 2×78298176877² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78298576877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6111124 + ... + 6123922.

It is an arithmetic number, because the mean of its divisors is an integer number (4993024000).

Almost surely, 2^78298176877 is an apocalyptic number.

It is an amenable number.

78298176877 is a deficient number, since it is larger than the sum of its proper divisors (1590207123).

78298176877 is a wasteful number, since it uses less digits than its factorization.

78298176877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13456.

The product of its digits is 132765696, while the sum is 70.

The spelling of 78298176877 in words is "seventy-eight billion, two hundred ninety-eight million, one hundred seventy-six thousand, eight hundred seventy-seven".