78758392752 has 60 divisors (see below), whose sum is σ = 237369050464. Its totient is φ = 24233351040.

The previous prime is 78758392681. The next prime is 78758392771. The reversal of 78758392752 is 25729385787.

It is a super-2 number, since 2×78758392752² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78758392752.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 21034024 + ... + 21037767.

Almost surely, 2^78758392752 is an apocalyptic number.

78758392752 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78758392752 is an abundant number, since it is smaller than the sum of its proper divisors (158610657712).

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

78758392752 is a wasteful number, since it uses less digits than its factorization.

78758392752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42071818 (or 42071809 counting only the distinct ones).

The product of its digits is 59270400, while the sum is 63.

The spelling of 78758392752 in words is "seventy-eight billion, seven hundred fifty-eight million, three hundred ninety-two thousand, seven hundred fifty-two".