15502111120551 has 12 divisors (see below), whose sum is σ = 22719347427896. Its totient is φ = 9395218860720.

The previous prime is 15502111120511. The next prime is 15502111120579.

15502111120551 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 15502111120551 - 2⁶ = 15502111120487 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 (15502111120501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21352769776 + ... + 21352770501.

Almost surely, 2^{15502111120551} is an apocalyptic number.

15502111120551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15502111120551 is a deficient number, since it is larger than the sum of its proper divisors (7217236307345).

15502111120551 is a wasteful number, since it uses less digits than its factorization.

15502111120551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42705540302 (or 42705540291 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 30.

It can be divided in two parts, 1550211 and 1120551, that added together give a palindrome (2670762).

The spelling of 15502111120551 in words is "fifteen trillion, five hundred two billion, one hundred eleven million, one hundred twenty thousand, five hundred fifty-one".