15455135616 has 128 divisors (see below), whose sum is σ = 42252896160. Its totient is φ = 5001707520.

The previous prime is 15455135593. The next prime is 15455135621. The reversal of 15455135616 is 61653155451.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×15455135616² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9106480 + ... + 9108176.

Almost surely, 2^15455135616 is an apocalyptic number.

15455135616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15455135616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21126448080).

15455135616 is an abundant number, since it is smaller than the sum of its proper divisors (26797760544).

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

15455135616 is a wasteful number, since it uses less digits than its factorization.

15455135616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392 (or 2380 counting only the distinct ones).

The product of its digits is 270000, while the sum is 42.

The spelling of 15455135616 in words is "fifteen billion, four hundred fifty-five million, one hundred thirty-five thousand, six hundred sixteen".