78357445776 has 45 divisors (see below), whose sum is σ = 219301419571. Its totient is φ = 26118028896.

The previous prime is 78357445763. The next prime is 78357445807. The reversal of 78357445776 is 67754475387.

The square root of 78357445776 is 279924.

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

78357445776 is a `hidden beast` number, since 7 + 8 + 3 + 57 + 4 + 4 + 577 + 6 = 666.

It is a super-2 number, since 2×78357445776² (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, 3347425 + ... + 3370751.

Almost surely, 2^78357445776 is an apocalyptic number.

78357445776 is the 279924-th square number.

It is an amenable number.

78357445776 is an abundant number, since it is smaller than the sum of its proper divisors (140943973795).

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

78357445776 is an frugal number, since it uses more digits than its factorization.

78357445776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46668 (or 23332 counting only the distinct ones).

The product of its digits is 138297600, while the sum is 63.

The spelling of 78357445776 in words is "seventy-eight billion, three hundred fifty-seven million, four hundred forty-five thousand, seven hundred seventy-six".