56015500556551 has 8 divisors (see below), whose sum is σ = 61889248697184. Its totient is φ = 50428276715520.

The previous prime is 56015500556429. The next prime is 56015500556569. The reversal of 56015500556551 is 15565500551065.

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

It is not a de Polignac number, because 56015500556551 - 2⁷ = 56015500556423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56015500556495 and 56015500556504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56015500856551) 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, 71631074490 + ... + 71631075271.

It is an arithmetic number, because the mean of its divisors is an integer number (7736156087148).

Almost surely, 2^{56015500556551} is an apocalyptic number.

56015500556551 is a deficient number, since it is larger than the sum of its proper divisors (5873748140633).

56015500556551 is a wasteful number, since it uses less digits than its factorization.

56015500556551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143262149801.

The product of its (nonzero) digits is 2812500, while the sum is 49.

The spelling of 56015500556551 in words is "fifty-six trillion, fifteen billion, five hundred million, five hundred fifty-six thousand, five hundred fifty-one".