78427619504 has 80 divisors (see below), whose sum is σ = 171974222112. Its totient is φ = 34399862784.

The previous prime is 78427619471. The next prime is 78427619521. The reversal of 78427619504 is 40591672487.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212432 + ... + 449424.

Almost surely, 2^78427619504 is an apocalyptic number.

78427619504 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78427619504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85987111056).

78427619504 is an abundant number, since it is smaller than the sum of its proper divisors (93546602608).

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

78427619504 is a wasteful number, since it uses less digits than its factorization.

78427619504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237094 (or 237088 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 78427619504 in words is "seventy-eight billion, four hundred twenty-seven million, six hundred nineteen thousand, five hundred four".