15552401335550 has 12 divisors (see below), whose sum is σ = 28927466484216. Its totient is φ = 6220960534200.

The previous prime is 15552401335543. The next prime is 15552401335561. The reversal of 15552401335550 is 5553310425551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155524013306 + ... + 155524013405.

It is an arithmetic number, because the mean of its divisors is an integer number (2410622207018).

Almost surely, 2^{15552401335550} is an apocalyptic number.

15552401335550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15552401335550 is a deficient number, since it is larger than the sum of its proper divisors (13375065148666).

15552401335550 is a wasteful number, since it uses less digits than its factorization.

15552401335550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311048026723 (or 311048026718 counting only the distinct ones).

The product of its (nonzero) digits is 1125000, while the sum is 44.

Subtracting from 15552401335550 its reverse (5553310425551), we obtain a palindrome (9999090909999).

The spelling of 15552401335550 in words is "fifteen trillion, five hundred fifty-two billion, four hundred one million, three hundred thirty-five thousand, five hundred fifty".