5515111056501 has 10 divisors (see below), whose sum is σ = 8238622689462. Its totient is φ = 3676740704280.

The previous prime is 5515111056491. The next prime is 5515111056527. The reversal of 5515111056501 is 1056501115155.

5515111056501 is a `hidden beast` number, since 5 + 51 + 51 + 1 + 1 + 0 + 56 + 501 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3371226488100 + 2143884568401 = 1836090^2 + 1464201^2 .

It is not a de Polignac number, because 5515111056501 - 2²⁷ = 5514976838773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515111056001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 34043895330 + ... + 34043895491.

Almost surely, 2^{5515111056501} is an apocalyptic number.

It is an amenable number.

5515111056501 is a deficient number, since it is larger than the sum of its proper divisors (2723511632961).

5515111056501 is an equidigital number, since it uses as much as digits as its factorization.

5515111056501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68087790833 (or 68087790824 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 36.

The spelling of 5515111056501 in words is "five trillion, five hundred fifteen billion, one hundred eleven million, fifty-six thousand, five hundred one".