102102252515 has 16 divisors (see below), whose sum is σ = 123739888896. Its totient is φ = 80870700000.

The previous prime is 102102252509. The next prime is 102102252521. The reversal of 102102252515 is 515252201201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102102252509) and next prime (102102252521).

It is not a de Polignac number, because 102102252515 - 2¹⁰ = 102102251491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2581640 + ... + 2620890.

It is an arithmetic number, because the mean of its divisors is an integer number (7733743056).

Almost surely, 2^102102252515 is an apocalyptic number.

102102252515 is a deficient number, since it is larger than the sum of its proper divisors (21637636381).

102102252515 is a wasteful number, since it uses less digits than its factorization.

102102252515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44410.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 102102252515 its reverse (515252201201), we get a palindrome (617354453716).

The spelling of 102102252515 in words is "one hundred two billion, one hundred two million, two hundred fifty-two thousand, five hundred fifteen".