556516101615655 has 4 divisors (see below), whose sum is σ = 667819321938792. Its totient is φ = 445212881292520.

The previous prime is 556516101615647. The next prime is 556516101615707.

556516101615655 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 556516101615655 - 2³ = 556516101615647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556516101615655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55651610161561 + ... + 55651610161570.

It is an arithmetic number, because the mean of its divisors is an integer number (166954830484698).

Almost surely, 2^{556516101615655} is an apocalyptic number.

556516101615655 is a deficient number, since it is larger than the sum of its proper divisors (111303220323137).

556516101615655 is a wasteful number, since it uses less digits than its factorization.

556516101615655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111303220323136.

The product of its (nonzero) digits is 20250000, while the sum is 58.

The spelling of 556516101615655 in words is "five hundred fifty-six trillion, five hundred sixteen billion, one hundred one million, six hundred fifteen thousand, six hundred fifty-five".