56455035639 has 4 divisors (see below), whose sum is σ = 75273380856. Its totient is φ = 37636690424.

The previous prime is 56455035617. The next prime is 56455035677. The reversal of 56455035639 is 93653055465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56455035639 - 2¹² = 56455031543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56455035591 and 56455035600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56455035739) 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, 9409172604 + ... + 9409172609.

It is an arithmetic number, because the mean of its divisors is an integer number (18818345214).

Almost surely, 2^56455035639 is an apocalyptic number.

56455035639 is a deficient number, since it is larger than the sum of its proper divisors (18818345217).

56455035639 is a wasteful number, since it uses less digits than its factorization.

56455035639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18818345216.

The product of its (nonzero) digits is 7290000, while the sum is 51.

The spelling of 56455035639 in words is "fifty-six billion, four hundred fifty-five million, thirty-five thousand, six hundred thirty-nine".