78429122704 has 45 divisors (see below), whose sum is σ = 154994955339. Its totient is φ = 38445538560.

The previous prime is 78429122693. The next prime is 78429122743. The reversal of 78429122704 is 40722192487.

The square root of 78429122704 is 280052.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 35517171600 + 42911951104 = 188460^2 + 207152^2 .

It is a super-2 number, since 2×78429122704² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 59370364 + ... + 59371684.

Almost surely, 2^78429122704 is an apocalyptic number.

78429122704 is the 280052-nd square number.

It is an amenable number.

78429122704 is a deficient number, since it is larger than the sum of its proper divisors (76565832635).

78429122704 is an frugal number, since it uses more digits than its factorization.

78429122704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2756 (or 1376 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 78429122704 in words is "seventy-eight billion, four hundred twenty-nine million, one hundred twenty-two thousand, seven hundred four".