56405663353 has 8 divisors (see below), whose sum is σ = 60800253696. Its totient is φ = 52019029200.

The previous prime is 56405663333. The next prime is 56405663357. The reversal of 56405663353 is 35336650465.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56405663353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56405663357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1974313 + ... + 2002678.

It is an arithmetic number, because the mean of its divisors is an integer number (7600031712).

Almost surely, 2^56405663353 is an apocalyptic number.

It is an amenable number.

56405663353 is a deficient number, since it is larger than the sum of its proper divisors (4394590343).

56405663353 is a wasteful number, since it uses less digits than its factorization.

56405663353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3978095.

The product of its (nonzero) digits is 2916000, while the sum is 46.

The spelling of 56405663353 in words is "fifty-six billion, four hundred five million, six hundred sixty-three thousand, three hundred fifty-three".