15155616055 has 4 divisors (see below), whose sum is σ = 18186739272. Its totient is φ = 12124492840.

The previous prime is 15155616037. The next prime is 15155616061. The reversal of 15155616055 is 55061655151.

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

It is not a de Polignac number, because 15155616055 - 2⁹ = 15155615543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15155615999 and 15155616017.

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, 1515561601 + ... + 1515561610.

It is an arithmetic number, because the mean of its divisors is an integer number (4546684818).

Almost surely, 2^15155616055 is an apocalyptic number.

15155616055 is a deficient number, since it is larger than the sum of its proper divisors (3031123217).

15155616055 is an equidigital number, since it uses as much as digits as its factorization.

15155616055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031123216.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 15155616055 in words is "fifteen billion, one hundred fifty-five million, six hundred sixteen thousand, fifty-five".