56501655661061 has 8 divisors (see below), whose sum is σ = 61996011147000. Its totient is φ = 51171310786752.

The previous prime is 56501655661021. The next prime is 56501655661079. The reversal of 56501655661061 is 16016655610565.

It can be written as a sum of positive squares in 4 ways, for example, as 2758901068036 + 53742754593025 = 1660994^2 + 7330945^2 .

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

It is not a de Polignac number, because 56501655661061 - 2¹⁸ = 56501655398917 is a prime.

It is a super-2 number, since 2×56501655661061² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56501655660994 and 56501655661012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56501655661021) 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, 41002652186 + ... + 41002653563.

It is an arithmetic number, because the mean of its divisors is an integer number (7749501393375).

Almost surely, 2^{56501655661061} is an apocalyptic number.

It is an amenable number.

56501655661061 is a deficient number, since it is larger than the sum of its proper divisors (5494355485939).

56501655661061 is a wasteful number, since it uses less digits than its factorization.

56501655661061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82005305815.

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 56501655661061 in words is "fifty-six trillion, five hundred one billion, six hundred fifty-five million, six hundred sixty-one thousand, sixty-one".