78498535752 has 128 divisors (see below), whose sum is σ = 268371129600. Its totient is φ = 20702905344.

The previous prime is 78498535741. The next prime is 78498535799. The reversal of 78498535752 is 25753589487.

78498535752 is a `hidden beast` number, since 7 + 8 + 4 + 9 + 8 + 53 + 575 + 2 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 78498535752.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1977153 + ... + 2016464.

It is an arithmetic number, because the mean of its divisors is an integer number (2096649450).

Almost surely, 2^78498535752 is an apocalyptic number.

78498535752 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78498535752 is an abundant number, since it is smaller than the sum of its proper divisors (189872593848).

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

78498535752 is a wasteful number, since it uses less digits than its factorization.

78498535752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993652 (or 3993642 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 63.

The spelling of 78498535752 in words is "seventy-eight billion, four hundred ninety-eight million, five hundred thirty-five thousand, seven hundred fifty-two".