56660041551 has 8 divisors (see below), whose sum is σ = 75638519680. Its totient is φ = 37727462232.

The previous prime is 56660041481. The next prime is 56660041567. The reversal of 56660041551 is 15514006665.

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

It is a de Polignac number, because none of the positive numbers 2^k-56660041551 is a prime.

It is a super-2 number, since 2×56660041551² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56660041951) 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, 11471821 + ... + 11476758.

It is an arithmetic number, because the mean of its divisors is an integer number (9454814960).

Almost surely, 2^56660041551 is an apocalyptic number.

56660041551 is a deficient number, since it is larger than the sum of its proper divisors (18978478129).

56660041551 is a wasteful number, since it uses less digits than its factorization.

56660041551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22949405.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 56660041551 in words is "fifty-six billion, six hundred sixty million, forty-one thousand, five hundred fifty-one".