56748000781 has 16 divisors (see below), whose sum is σ = 60484546368. Its totient is φ = 53056684800.

The previous prime is 56748000779. The next prime is 56748000791. The reversal of 56748000781 is 18700084765.

56748000781 = T₁₉₄₅₀₃ + T₁₉₄₅₀₄ + T₁₉₄₅₀₅.

56748000781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56748000781 - 2¹ = 56748000779 is a prime.

It is a super-2 number, since 2×56748000781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56748000731) 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, 1925946 + ... + 1955188.

It is an arithmetic number, because the mean of its divisors is an integer number (3780284148).

Almost surely, 2^56748000781 is an apocalyptic number.

56748000781 is the 194505-th centered triangular number.

It is an amenable number.

56748000781 is a deficient number, since it is larger than the sum of its proper divisors (3736545587).

56748000781 is a wasteful number, since it uses less digits than its factorization.

56748000781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30012.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 56748000781 in words is "fifty-six billion, seven hundred forty-eight million, seven hundred eighty-one", and thus it is an aban number.