102456640402215 has 16 divisors (see below), whose sum is σ = 178833408702336. Its totient is φ = 49675946861600.

The previous prime is 102456640402187. The next prime is 102456640402223. The reversal of 102456640402215 is 512204046654201.

It is not a de Polignac number, because 102456640402215 - 2¹⁰ = 102456640401191 is a prime.

It is a congruent 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, 310474667721 + ... + 310474668050.

It is an arithmetic number, because the mean of its divisors is an integer number (11177088043896).

Almost surely, 2^{102456640402215} is an apocalyptic number.

102456640402215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102456640402215 is a deficient number, since it is larger than the sum of its proper divisors (76376768300121).

102456640402215 is a wasteful number, since it uses less digits than its factorization.

102456640402215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620949335790.

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 102456640402215 in words is "one hundred two trillion, four hundred fifty-six billion, six hundred forty million, four hundred two thousand, two hundred fifteen".