56451359890 has 32 divisors (see below), whose sum is σ = 103824659520. Its totient is φ = 22092571200.

The previous prime is 56451359851. The next prime is 56451359911. The reversal of 56451359890 is 9895315465.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102241 + ... + 351220.

It is an arithmetic number, because the mean of its divisors is an integer number (3244520610).

Almost surely, 2^56451359890 is an apocalyptic number.

56451359890 is a deficient number, since it is larger than the sum of its proper divisors (47373299630).

56451359890 is a wasteful number, since it uses less digits than its factorization.

56451359890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453738.

The product of its (nonzero) digits is 5832000, while the sum is 55.

It can be divided in two parts, 564513 and 59890, that added together give a triangular number (624403 = T₁₁₁₇).

The spelling of 56451359890 in words is "fifty-six billion, four hundred fifty-one million, three hundred fifty-nine thousand, eight hundred ninety".