78151705280 has 224 divisors, whose sum is σ = 208349770752. Its totient is φ = 27678310400.

The previous prime is 78151705279. The next prime is 78151705297. The reversal of 78151705280 is 8250715187.

It is a super-2 number, since 2×78151705280² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37553840 + ... + 37555920.

Almost surely, 2^78151705280 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 78151705280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104174885376).

78151705280 is an abundant number, since it is smaller than the sum of its proper divisors (130198065472).

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

78151705280 is a wasteful number, since it uses less digits than its factorization.

78151705280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383 (or 2373 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 44.

The spelling of 78151705280 in words is "seventy-eight billion, one hundred fifty-one million, seven hundred five thousand, two hundred eighty".