56431402780 has 12 divisors (see below), whose sum is σ = 118505945880. Its totient is φ = 22572561104.

The previous prime is 56431402771. The next prime is 56431402801. The reversal of 56431402780 is 8720413465.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1410785050 + ... + 1410785089.

It is an arithmetic number, because the mean of its divisors is an integer number (9875495490).

Almost surely, 2^56431402780 is an apocalyptic number.

It is an amenable number.

56431402780 is an abundant number, since it is smaller than the sum of its proper divisors (62074543100).

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

56431402780 is a wasteful number, since it uses less digits than its factorization.

56431402780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821570148 (or 2821570146 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 56431402780 in words is "fifty-six billion, four hundred thirty-one million, four hundred two thousand, seven hundred eighty".