2660010522421 has 24 divisors (see below), whose sum is σ = 3100290445536. Its totient is φ = 2275597709280.

The previous prime is 2660010522319. The next prime is 2660010522443. The reversal of 2660010522421 is 1242250100662.

It is not a de Polignac number, because 2660010522421 - 2¹¹ = 2660010520373 is a prime.

It is a super-4 number, since 4×2660010522421⁴ (a number of 51 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660010528421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55454170 + ... + 55502116.

It is an arithmetic number, because the mean of its divisors is an integer number (129178768564).

Almost surely, 2^{2660010522421} is an apocalyptic number.

It is an amenable number.

2660010522421 is a deficient number, since it is larger than the sum of its proper divisors (440279923115).

2660010522421 is a wasteful number, since it uses less digits than its factorization.

2660010522421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50129 (or 50122 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 2660010522421 in words is "two trillion, six hundred sixty billion, ten million, five hundred twenty-two thousand, four hundred twenty-one".