78915414311874 has 192 divisors, whose sum is σ = 205427279191680. Its totient is φ = 22389768213120.

The previous prime is 78915414311801. The next prime is 78915414311893. The reversal of 78915414311874 is 47811341451987.

78915414311874 is a `hidden beast` number, since 7 + 8 + 9 + 1 + 5 + 414 + 31 + 187 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 326985832 + ... + 327227084.

It is an arithmetic number, because the mean of its divisors is an integer number (1069933745790).

Almost surely, 2^{78915414311874} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78915414311874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102713639595840).

78915414311874 is an abundant number, since it is smaller than the sum of its proper divisors (126511864879806).

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

78915414311874 is a wasteful number, since it uses less digits than its factorization.

78915414311874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242142 (or 242129 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 63.

The spelling of 78915414311874 in words is "seventy-eight trillion, nine hundred fifteen billion, four hundred fourteen million, three hundred eleven thousand, eight hundred seventy-four".