15115027550 has 36 divisors (see below), whose sum is σ = 32703989400. Its totient is φ = 5182294320.

The previous prime is 15115027531. The next prime is 15115027559. The reversal of 15115027550 is 5572051151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15115027559) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3082250 + ... + 3087149.

It is an arithmetic number, because the mean of its divisors is an integer number (908444150).

Almost surely, 2^15115027550 is an apocalyptic number.

15115027550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15115027550 is an abundant number, since it is smaller than the sum of its proper divisors (17588961850).

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

15115027550 is a wasteful number, since it uses less digits than its factorization.

15115027550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169425 (or 6169413 counting only the distinct ones).

The product of its (nonzero) digits is 8750, while the sum is 32.

The spelling of 15115027550 in words is "fifteen billion, one hundred fifteen million, twenty-seven thousand, five hundred fifty".