78739459974 has 48 divisors (see below), whose sum is σ = 195031219968. Its totient is φ = 22490374896.

The previous prime is 78739459969. The next prime is 78739459979. The reversal of 78739459974 is 47995493787.

78739459974 is a `hidden beast` number, since 7 + 87 + 3 + 9 + 459 + 97 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (78739459969) and next prime (78739459979).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78739459979) 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 23 ways as a sum of consecutive naturals, for example, 346719 + ... + 526965.

It is an arithmetic number, because the mean of its divisors is an integer number (4063150416).

Almost surely, 2^78739459974 is an apocalyptic number.

78739459974 is an abundant number, since it is smaller than the sum of its proper divisors (116291759994).

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

78739459974 is a wasteful number, since it uses less digits than its factorization.

78739459974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183729 (or 183726 counting only the distinct ones).

The product of its digits is 480090240, while the sum is 72.

The spelling of 78739459974 in words is "seventy-eight billion, seven hundred thirty-nine million, four hundred fifty-nine thousand, nine hundred seventy-four".