56155000061 has 8 divisors (see below), whose sum is σ = 59120080800. Its totient is φ = 53190874800.

The previous prime is 56155000037. The next prime is 56155000079. The reversal of 56155000061 is 16000055165.

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

It is a cyclic number.

It is not a de Polignac number, because 56155000061 - 2²² = 56150805757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56154999988 and 56155000033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56155000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116615 + ... + 354836.

It is an arithmetic number, because the mean of its divisors is an integer number (7390010100).

Almost surely, 2^56155000061 is an apocalyptic number.

It is an amenable number.

56155000061 is a deficient number, since it is larger than the sum of its proper divisors (2965080739).

56155000061 is a wasteful number, since it uses less digits than its factorization.

56155000061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477739.

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 56155000061 in words is "fifty-six billion, one hundred fifty-five million, sixty-one", and thus it is an aban number.