15655100551 has 4 divisors (see below), whose sum is σ = 15694141104. Its totient is φ = 15616060000.

The previous prime is 15655100543. The next prime is 15655100611. The reversal of 15655100551 is 15500155651.

15655100551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 15655100551 - 2³ = 15655100543 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 (15655110551) 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 3 ways as a sum of consecutive naturals, for example, 19519675 + ... + 19520476.

It is an arithmetic number, because the mean of its divisors is an integer number (3923535276).

Almost surely, 2^15655100551 is an apocalyptic number.

15655100551 is a deficient number, since it is larger than the sum of its proper divisors (39040553).

15655100551 is an equidigital number, since it uses as much as digits as its factorization.

15655100551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39040552.

The product of its (nonzero) digits is 18750, while the sum is 34.

It can be divided in two parts, 15655100 and 551, that added together give a palindrome (15655651).

The spelling of 15655100551 in words is "fifteen billion, six hundred fifty-five million, one hundred thousand, five hundred fifty-one".