10556055561 has 8 divisors (see below), whose sum is σ = 14075293024. Its totient is φ = 7037094240.

The previous prime is 10556055553. The next prime is 10556055571. The reversal of 10556055561 is 16555065501.

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

It is not a de Polignac number, because 10556055561 - 2³ = 10556055553 is a prime.

It is a super-2 number, since 2×10556055561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10556055571) 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, 48990 + ... + 153336.

It is an arithmetic number, because the mean of its divisors is an integer number (1759411628).

Almost surely, 2^10556055561 is an apocalyptic number.

It is an amenable number.

10556055561 is a deficient number, since it is larger than the sum of its proper divisors (3519237463).

10556055561 is a wasteful number, since it uses less digits than its factorization.

10556055561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138071.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 10556055561 in words is "ten billion, five hundred fifty-six million, fifty-five thousand, five hundred sixty-one".