1315242500520 has 128 divisors (see below), whose sum is σ = 4253784675840. Its totient is φ = 323406120960.

The previous prime is 1315242500503. The next prime is 1315242500549. The reversal of 1315242500520 is 250052425131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1011825 + ... + 1911615.

It is an arithmetic number, because the mean of its divisors is an integer number (33232692780).

Almost surely, 2^{1315242500520} is an apocalyptic number.

1315242500520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315242500520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2126892337920).

1315242500520 is an abundant number, since it is smaller than the sum of its proper divisors (2938542175320).

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

1315242500520 is a wasteful number, since it uses less digits than its factorization.

1315242500520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900755 (or 900751 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 1315242500520 its reverse (250052425131), we get a palindrome (1565294925651).

The spelling of 1315242500520 in words is "one trillion, three hundred fifteen billion, two hundred forty-two million, five hundred thousand, five hundred twenty".