56212013780 has 48 divisors (see below), whose sum is σ = 127457777664. Its totient is φ = 20700977280.

The previous prime is 56212013747. The next prime is 56212013789. The reversal of 56212013780 is 8731021265.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 56212013780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56212013789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182666 + ... + 381825.

It is an arithmetic number, because the mean of its divisors is an integer number (2655370368).

Almost surely, 2^56212013780 is an apocalyptic number.

It is an amenable number.

56212013780 is an abundant number, since it is smaller than the sum of its proper divisors (71245763884).

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

56212013780 is a wasteful number, since it uses less digits than its factorization.

56212013780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564896 (or 564894 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 56212013780 in words is "fifty-six billion, two hundred twelve million, thirteen thousand, seven hundred eighty".