15155011055 has 4 divisors (see below), whose sum is σ = 18186013272. Its totient is φ = 12124008840.

The previous prime is 15155011049. The next prime is 15155011061. The reversal of 15155011055 is 55011055151.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (15155011049) and next prime (15155011061).

It is not a de Polignac number, because 15155011055 - 2¹² = 15155006959 is a prime.

It is a Duffinian number.

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, 1515501101 + ... + 1515501110.

It is an arithmetic number, because the mean of its divisors is an integer number (4546503318).

Almost surely, 2^15155011055 is an apocalyptic number.

15155011055 is a deficient number, since it is larger than the sum of its proper divisors (3031002217).

15155011055 is an equidigital number, since it uses as much as digits as its factorization.

15155011055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031002216.

The product of its (nonzero) digits is 3125, while the sum is 29.

The spelling of 15155011055 in words is "fifteen billion, one hundred fifty-five million, eleven thousand, fifty-five".