15515500252130 has 16 divisors (see below), whose sum is σ = 27928212325560. Its totient is φ = 6206130796032.

The previous prime is 15515500252103. The next prime is 15515500252139. The reversal of 15515500252130 is 3125200551551.

It can be written as a sum of positive squares in 4 ways, for example, as 15256703196289 + 258797055841 = 3905983^2 + 508721^2 .

It is not an unprimeable number, because it can be changed into a prime (15515500252139) 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, 7717925 + ... + 9518264.

Almost surely, 2^{15515500252130} is an apocalyptic number.

15515500252130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15515500252130 is a deficient number, since it is larger than the sum of its proper divisors (12412712073430).

15515500252130 is a wasteful number, since it uses less digits than its factorization.

15515500252130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17326213.

The product of its (nonzero) digits is 37500, while the sum is 35.

The spelling of 15515500252130 in words is "fifteen trillion, five hundred fifteen billion, five hundred million, two hundred fifty-two thousand, one hundred thirty".