56408862786 has 64 divisors (see below), whose sum is σ = 115067437056. Its totient is φ = 18432460800.

The previous prime is 56408862779. The next prime is 56408862787. The reversal of 56408862786 is 68726880465.

56408862786 is a nontrivial binomial coefficient, being equal to C(335884, 2).

It is a super-3 number, since 3×56408862786³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (56408862787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51893535 + ... + 51894621.

It is an arithmetic number, because the mean of its divisors is an integer number (1797928704).

Almost surely, 2^56408862786 is an apocalyptic number.

56408862786 is the 335883-rd triangular number and also the 167942-nd hexagonal number.

56408862786 is an abundant number, since it is smaller than the sum of its proper divisors (58658574270).

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

56408862786 is a wasteful number, since it uses less digits than its factorization.

56408862786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967.

The product of its (nonzero) digits is 30965760, while the sum is 60.

The spelling of 56408862786 in words is "fifty-six billion, four hundred eight million, eight hundred sixty-two thousand, seven hundred eighty-six".