74278051600 has 45 divisors (see below), whose sum is σ = 178466115477. Its totient is φ = 29709040320.

The previous prime is 74278051571. The next prime is 74278051637. The reversal of 74278051600 is 615087247.

The square root of 74278051600 is 272540.

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

It can be written as a sum of positive squares in only one way, i.e., 26740098576 + 47537953024 = 163524^2 + 218032^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 5443987 + ... + 5457613.

Almost surely, 2^74278051600 is an apocalyptic number.

74278051600 is the 272540-th square number.

It is an amenable number.

74278051600 is an abundant number, since it is smaller than the sum of its proper divisors (104188063877).

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

74278051600 is an frugal number, since it uses more digits than its factorization.

74278051600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27272 (or 13634 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 74278051600 in words is "seventy-four billion, two hundred seventy-eight million, fifty-one thousand, six hundred".