78607775031 has 16 divisors (see below), whose sum is σ = 106327307520. Its totient is φ = 51647279040.

The previous prime is 78607775011. The next prime is 78607775047. The reversal of 78607775031 is 13057770687.

It is a happy number.

It is not a de Polignac number, because 78607775031 - 2²⁷ = 78473557303 is a prime.

It is a super-2 number, since 2×78607775031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78607775011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496971 + ... + 635763.

It is an arithmetic number, because the mean of its divisors is an integer number (6645456720).

Almost surely, 2^78607775031 is an apocalyptic number.

78607775031 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

78607775031 is a deficient number, since it is larger than the sum of its proper divisors (27719532489).

78607775031 is a wasteful number, since it uses less digits than its factorization.

78607775031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141526.

The product of its (nonzero) digits is 1728720, while the sum is 51.

The spelling of 78607775031 in words is "seventy-eight billion, six hundred seven million, seven hundred seventy-five thousand, thirty-one".