260515215021 has 32 divisors (see below), whose sum is σ = 374100249600. Its totient is φ = 160655471360.

The previous prime is 260515215019. The next prime is 260515215049. The reversal of 260515215021 is 120512515062.

It is a cyclic number.

It is not a de Polignac number, because 260515215021 - 2¹ = 260515215019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 260515215021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260515215001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27795466 + ... + 27804836.

It is an arithmetic number, because the mean of its divisors is an integer number (11690632800).

Almost surely, 2^260515215021 is an apocalyptic number.

It is an amenable number.

260515215021 is a deficient number, since it is larger than the sum of its proper divisors (113585034579).

260515215021 is a wasteful number, since it uses less digits than its factorization.

260515215021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18689.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 260515215021 in words is "two hundred sixty billion, five hundred fifteen million, two hundred fifteen thousand, twenty-one".