56140777840 has 120 divisors (see below), whose sum is σ = 155942019072. Its totient is φ = 18727994880.

The previous prime is 56140777811. The next prime is 56140777843. The reversal of 56140777840 is 4877704165.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56140777843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48496 + ... + 338575.

Almost surely, 2^56140777840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56140777840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77971009536).

56140777840 is an abundant number, since it is smaller than the sum of its proper divisors (99801241232).

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

56140777840 is a wasteful number, since it uses less digits than its factorization.

56140777840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387135 (or 387122 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 56140777840 in words is "fifty-six billion, one hundred forty million, seven hundred seventy-seven thousand, eight hundred forty".