15534449080 has 32 divisors (see below), whose sum is σ = 34957713600. Its totient is φ = 6212854656.

The previous prime is 15534449059. The next prime is 15534449087. The reversal of 15534449080 is 8094443551.

It is a super-2 number, since 2×15534449080² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15534449087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285334 + ... + 335386.

It is an arithmetic number, because the mean of its divisors is an integer number (1092428550).

Almost surely, 2^15534449080 is an apocalyptic number.

15534449080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15534449080 is an abundant number, since it is smaller than the sum of its proper divisors (19423264520).

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

15534449080 is a wasteful number, since it uses less digits than its factorization.

15534449080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57823 (or 57819 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 15534449080 in words is "fifteen billion, five hundred thirty-four million, four hundred forty-nine thousand, eighty".