56302361661 has 72 divisors (see below), whose sum is σ = 94964116800. Its totient is φ = 29645755776.

The previous prime is 56302361627. The next prime is 56302361677. The reversal of 56302361661 is 16616320365.

It is a happy number.

It is not a de Polignac number, because 56302361661 - 2¹⁰ = 56302360637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56302361461) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 98949385 + ... + 98949953.

Almost surely, 2^56302361661 is an apocalyptic number.

It is an amenable number.

56302361661 is a deficient number, since it is larger than the sum of its proper divisors (38661755139).

56302361661 is an frugal number, since it uses more digits than its factorization.

56302361661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 56302361661 in words is "fifty-six billion, three hundred two million, three hundred sixty-one thousand, six hundred sixty-one".