56426978029 has 4 divisors (see below), whose sum is σ = 57739233376. Its totient is φ = 55114722684.

The previous prime is 56426977991. The next prime is 56426978053. The reversal of 56426978029 is 92087962465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56426978029 - 2¹¹ = 56426975981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56426979029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656127609 + ... + 656127694.

It is an arithmetic number, because the mean of its divisors is an integer number (14434808344).

Almost surely, 2^56426978029 is an apocalyptic number.

It is an amenable number.

56426978029 is a deficient number, since it is larger than the sum of its proper divisors (1312255347).

56426978029 is a wasteful number, since it uses less digits than its factorization.

56426978029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312255346.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 56426978029 in words is "fifty-six billion, four hundred twenty-six million, nine hundred seventy-eight thousand, twenty-nine".