1315520500100 has 18 divisors (see below), whose sum is σ = 2854679485434. Its totient is φ = 526208200000.

The previous prime is 1315520500051. The next prime is 1315520500139. The reversal of 1315520500100 is 10050255131.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8760585604 + 1306759914496 = 93598^2 + 1143136^2 .

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, 6577602401 + ... + 6577602600.

Almost surely, 2^{1315520500100} is an apocalyptic number.

1315520500100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315520500100 is an abundant number, since it is smaller than the sum of its proper divisors (1539158985334).

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

1315520500100 is a wasteful number, since it uses less digits than its factorization.

1315520500100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13155205015 (or 13155205008 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 1315520500100 its reverse (10050255131), we get a palindrome (1325570755231).

The spelling of 1315520500100 in words is "one trillion, three hundred fifteen billion, five hundred twenty million, five hundred thousand, one hundred".