2540421662466 has 32 divisors (see below), whose sum is σ = 5245210828800. Its totient is φ = 819417525840.

The previous prime is 2540421662419. The next prime is 2540421662489. The reversal of 2540421662466 is 6642661240452.

It is a happy 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, 1492425 + ... + 2703363.

It is an arithmetic number, because the mean of its divisors is an integer number (163912838400).

Almost surely, 2^{2540421662466} is an apocalyptic number.

2540421662466 is an abundant number, since it is smaller than the sum of its proper divisors (2704789166334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2540421662466 is a wasteful number, since it uses less digits than its factorization.

2540421662466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222254.

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 2540421662466 in words is "two trillion, five hundred forty billion, four hundred twenty-one million, six hundred sixty-two thousand, four hundred sixty-six".