56781763311 has 16 divisors (see below), whose sum is σ = 93180329984. Its totient is φ = 29950820064.

The previous prime is 56781763309. The next prime is 56781763327. The reversal of 56781763311 is 11336718765.

It is a happy number.

It is not a de Polignac number, because 56781763311 - 2¹ = 56781763309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56781763351) 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, 103995631 + ... + 103996176.

It is an arithmetic number, because the mean of its divisors is an integer number (5823770624).

Almost surely, 2^56781763311 is an apocalyptic number.

56781763311 is a deficient number, since it is larger than the sum of its proper divisors (36398566673).

56781763311 is a wasteful number, since it uses less digits than its factorization.

56781763311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207991830.

The product of its digits is 635040, while the sum is 48.

The spelling of 56781763311 in words is "fifty-six billion, seven hundred eighty-one million, seven hundred sixty-three thousand, three hundred eleven".