56381506772644 has 27 divisors (see below), whose sum is σ = 104134514923467. Its totient is φ = 26706894366168.

The previous prime is 56381506772627. The next prime is 56381506772671. The reversal of 56381506772644 is 44627760518365.

56381506772644 = T_6130877 + T_6130878 + T_6130879.

The square root of 56381506772644 is 7508762.

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

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, 285234157 + ... + 285431755.

Almost surely, 2^{56381506772644} is an apocalyptic number.

56381506772644 is the 7508762-nd square number.

56381506772644 is the 6130879-th centered triangular number.

It is an amenable number.

56381506772644 is a deficient number, since it is larger than the sum of its proper divisors (47753008150823).

56381506772644 is an frugal number, since it uses more digits than its factorization.

56381506772644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395240 (or 197620 counting only the distinct ones).

The product of its (nonzero) digits is 203212800, while the sum is 64.

The spelling of 56381506772644 in words is "fifty-six trillion, three hundred eighty-one billion, five hundred six million, seven hundred seventy-two thousand, six hundred forty-four".