56203381851 has 16 divisors (see below), whose sum is σ = 80370282240. Its totient is φ = 34827118560.

The previous prime is 56203381789. The next prime is 56203381867. The reversal of 56203381851 is 15818330265.

It is not a de Polignac number, because 56203381851 - 2⁷ = 56203381723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56203381891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9299095 + ... + 9305136.

It is an arithmetic number, because the mean of its divisors is an integer number (5023142640).

Almost surely, 2^56203381851 is an apocalyptic number.

56203381851 is a deficient number, since it is larger than the sum of its proper divisors (24166900389).

56203381851 is a wasteful number, since it uses less digits than its factorization.

56203381851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18604306.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 56203381851 in words is "fifty-six billion, two hundred three million, three hundred eighty-one thousand, eight hundred fifty-one".