15515416455 has 128 divisors (see below), whose sum is σ = 32192004096. Its totient is φ = 6192460800.

The previous prime is 15515416447. The next prime is 15515416457. The reversal of 15515416455 is 55461451551.

It is not a de Polignac number, because 15515416455 - 2³ = 15515416447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15515416457) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4903704 + ... + 4906866.

It is an arithmetic number, because the mean of its divisors is an integer number (251500032).

Almost surely, 2^15515416455 is an apocalyptic number.

15515416455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15515416455 is an abundant number, since it is smaller than the sum of its proper divisors (16676587641).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15515416455 is a wasteful number, since it uses less digits than its factorization.

15515416455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357.

The product of its digits is 300000, while the sum is 42.

The spelling of 15515416455 in words is "fifteen billion, five hundred fifteen million, four hundred sixteen thousand, four hundred fifty-five".