2661216854632 has 32 divisors (see below), whose sum is σ = 5703065363520. Its totient is φ = 1140429945600.

The previous prime is 2661216854627. The next prime is 2661216854641. The reversal of 2661216854632 is 2364586121662.

It is a self number, because there is not a number n which added to its sum of digits gives 2661216854632.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201494 + ... + 2601157.

It is an arithmetic number, because the mean of its divisors is an integer number (178220792610).

Almost surely, 2^{2661216854632} is an apocalyptic number.

It is an amenable number.

2661216854632 is an abundant number, since it is smaller than the sum of its proper divisors (3041848508888).

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

2661216854632 is a wasteful number, since it uses less digits than its factorization.

2661216854632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815161 (or 3815157 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 52.

The spelling of 2661216854632 in words is "two trillion, six hundred sixty-one billion, two hundred sixteen million, eight hundred fifty-four thousand, six hundred thirty-two".