55561100006961 has 12 divisors (see below), whose sum is σ = 84478865507920. Its totient is φ = 35091221056920.

The previous prime is 55561100006957. The next prime is 55561100006977. The reversal of 55561100006961 is 16960000116555.

55561100006961 is a `hidden beast` number, since 5 + 556 + 1 + 1 + 0 + 0 + 0 + 0 + 6 + 96 + 1 = 666.

It is not a de Polignac number, because 55561100006961 - 2² = 55561100006957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55561100004961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162459356575 + ... + 162459356916.

Almost surely, 2^{55561100006961} is an apocalyptic number.

It is an amenable number.

55561100006961 is a deficient number, since it is larger than the sum of its proper divisors (28917765500959).

55561100006961 is a wasteful number, since it uses less digits than its factorization.

55561100006961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324918713516 (or 324918713513 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 55561100006961 in words is "fifty-five trillion, five hundred sixty-one billion, one hundred million, six thousand, nine hundred sixty-one".