15015450555500 has 48 divisors (see below), whose sum is σ = 33242973464064. Its totient is φ = 5923903766400.

The previous prime is 15015450555499. The next prime is 15015450555509. The reversal of 15015450555500 is 555505451051.

It is a happy number.

It is a super-4 number, since 4×15015450555500⁴ (a number of 54 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (15015450555509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205654604 + ... + 205727603.

It is an arithmetic number, because the mean of its divisors is an integer number (692561947168).

Almost surely, 2^{15015450555500} is an apocalyptic number.

15015450555500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15015450555500 is an abundant number, since it is smaller than the sum of its proper divisors (18227522908564).

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

15015450555500 is a wasteful number, since it uses less digits than its factorization.

15015450555500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411382299 (or 411382287 counting only the distinct ones).

The product of its (nonzero) digits is 312500, while the sum is 41.

The spelling of 15015450555500 in words is "fifteen trillion, fifteen billion, four hundred fifty million, five hundred fifty-five thousand, five hundred".