5511661100557 has 8 divisors (see below), whose sum is σ = 5517041793984. Its totient is φ = 5506280777088.

The previous prime is 5511661100537. The next prime is 5511661100581. The reversal of 5511661100557 is 7550011661155.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5511661100557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511661100507) 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 7 ways as a sum of consecutive naturals, for example, 36878493 + ... + 37027645.

It is an arithmetic number, because the mean of its divisors is an integer number (689630224248).

Almost surely, 2^{5511661100557} is an apocalyptic number.

It is an amenable number.

5511661100557 is a deficient number, since it is larger than the sum of its proper divisors (5380693427).

5511661100557 is a wasteful number, since it uses less digits than its factorization.

5511661100557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184979.

The product of its (nonzero) digits is 157500, while the sum is 43.

The spelling of 5511661100557 in words is "five trillion, five hundred eleven billion, six hundred sixty-one million, one hundred thousand, five hundred fifty-seven".