56783787137 has 48 divisors (see below), whose sum is σ = 72639092736. Its totient is φ = 43440645600.

The previous prime is 56783787133. The next prime is 56783787167. The reversal of 56783787137 is 73178738765.

It is a happy number.

It is not a de Polignac number, because 56783787137 - 2² = 56783787133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56783787137.

It is not an unprimeable number, because it can be changed into a prime (56783787133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18782408 + ... + 18785430.

It is an arithmetic number, because the mean of its divisors is an integer number (1513314432).

Almost surely, 2^56783787137 is an apocalyptic number.

It is an amenable number.

56783787137 is a deficient number, since it is larger than the sum of its proper divisors (15855305599).

56783787137 is a wasteful number, since it uses less digits than its factorization.

56783787137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450 (or 3439 counting only the distinct ones).

The product of its digits is 41489280, while the sum is 62.

The spelling of 56783787137 in words is "fifty-six billion, seven hundred eighty-three million, seven hundred eighty-seven thousand, one hundred thirty-seven".