78019685274 has 16 divisors (see below), whose sum is σ = 158597393760. Its totient is φ = 25580224560.

The previous prime is 78019685269. The next prime is 78019685279. The reversal of 78019685274 is 47258691087.

It is an interprime number because it is at equal distance from previous prime (78019685269) and next prime (78019685279).

It is not an unprimeable number, because it can be changed into a prime (78019685279) 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, 106583904 + ... + 106584635.

It is an arithmetic number, because the mean of its divisors is an integer number (9912337110).

Almost surely, 2^78019685274 is an apocalyptic number.

78019685274 is an abundant number, since it is smaller than the sum of its proper divisors (80577708486).

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

78019685274 is a wasteful number, since it uses less digits than its factorization.

78019685274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213168605.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 78019685274 in words is "seventy-eight billion, nineteen million, six hundred eighty-five thousand, two hundred seventy-four".