78207402504 has 512 divisors, whose sum is σ = 262020096000. Its totient is φ = 18854584320.

The previous prime is 78207402439. The next prime is 78207402523. The reversal of 78207402504 is 40520470287.

It is a super-2 number, since 2×78207402504² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 335653972 + ... + 335654204.

It is an arithmetic number, because the mean of its divisors is an integer number (511758000).

Almost surely, 2^78207402504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78207402504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131010048000).

78207402504 is an abundant number, since it is smaller than the sum of its proper divisors (183812693496).

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

78207402504 is a wasteful number, since it uses less digits than its factorization.

78207402504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 39.

The spelling of 78207402504 in words is "seventy-eight billion, two hundred seven million, four hundred two thousand, five hundred four".