78019685275 has 72 divisors (see below), whose sum is σ = 122548518000. Its totient is φ = 48935335680.

The previous prime is 78019685269. The next prime is 78019685279. The reversal of 78019685275 is 57258691087.

It is not a de Polignac number, because 78019685275 - 2⁵ = 78019685243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78019685279) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 617181 + ... + 732769.

It is an arithmetic number, because the mean of its divisors is an integer number (1702062750).

Almost surely, 2^78019685275 is an apocalyptic number.

78019685275 is a deficient number, since it is larger than the sum of its proper divisors (44528832725).

78019685275 is a wasteful number, since it uses less digits than its factorization.

78019685275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115661 (or 115649 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 58.

The spelling of 78019685275 in words is "seventy-eight billion, nineteen million, six hundred eighty-five thousand, two hundred seventy-five".