315215242500 has 120 divisors (see below), whose sum is σ = 919368682848. Its totient is φ = 84031328000.

The previous prime is 315215242493. The next prime is 315215242501. The reversal of 315215242500 is 5242512513.

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

It is not an unprimeable number, because it can be changed into a prime (315215242501) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43818904 + ... + 43826096.

Almost surely, 2^315215242500 is an apocalyptic number.

315215242500 is a gapful number since it is divisible by the number (30) 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 315215242500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459684341424).

315215242500 is an abundant number, since it is smaller than the sum of its proper divisors (604153440348).

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

315215242500 is a wasteful number, since it uses less digits than its factorization.

315215242500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13063 (or 13046 counting only the distinct ones).

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

The spelling of 315215242500 in words is "three hundred fifteen billion, two hundred fifteen million, two hundred forty-two thousand, five hundred".