102020515315 has 16 divisors (see below), whose sum is σ = 126674055936. Its totient is φ = 78795964800.

The previous prime is 102020515309. The next prime is 102020515319. The reversal of 102020515315 is 513515020201.

It is not a de Polignac number, because 102020515315 - 2⁵ = 102020515283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102020515315.

It is not an unprimeable number, because it can be changed into a prime (102020515319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716452 + ... + 846961.

It is an arithmetic number, because the mean of its divisors is an integer number (7917128496).

Almost surely, 2^102020515315 is an apocalyptic number.

102020515315 is a deficient number, since it is larger than the sum of its proper divisors (24653540621).

102020515315 is a wasteful number, since it uses less digits than its factorization.

102020515315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563870.

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 102020515315 its reverse (513515020201), we get a palindrome (615535535516).

The spelling of 102020515315 in words is "one hundred two billion, twenty million, five hundred fifteen thousand, three hundred fifteen".