15555413000000 has 98 divisors (see below), whose sum is σ = 38584224435918. Its totient is φ = 6222164800000.

The previous prime is 15555412999969. The next prime is 15555413000107. The reversal of 15555413000000 is 31455551.

It can be written as a sum of positive squares in 7 ways, for example, as 15370037975296 + 185375024704 = 3920464^2 + 430552^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 6777707 + ... + 8777706.

Almost surely, 2^{15555413000000} is an apocalyptic number.

15555413000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15555413000000 is an abundant number, since it is smaller than the sum of its proper divisors (23028811435918).

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

15555413000000 is an frugal number, since it uses more digits than its factorization.

15555413000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15555455 (or 15555420 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

Adding to 15555413000000 its reverse (31455551), we get a palindrome (15555444455551).

The spelling of 15555413000000 in words is "fifteen trillion, five hundred fifty-five billion, four hundred thirteen million", and thus it is an aban number.