56366665542 has 24 divisors (see below), whose sum is σ = 133230300840. Its totient is φ = 17080807680.

The previous prime is 56366665513. The next prime is 56366665543. The reversal of 56366665542 is 24556666365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56366665543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142339867 + ... + 142340262.

It is an arithmetic number, because the mean of its divisors is an integer number (5551262535).

Almost surely, 2^56366665542 is an apocalyptic number.

56366665542 is an abundant number, since it is smaller than the sum of its proper divisors (76863635298).

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

56366665542 is a wasteful number, since it uses less digits than its factorization.

56366665542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284680148 (or 284680145 counting only the distinct ones).

The product of its digits is 23328000, while the sum is 54.

The spelling of 56366665542 in words is "fifty-six billion, three hundred sixty-six million, six hundred sixty-five thousand, five hundred forty-two".