2161322624 has 32 divisors (see below), whose sum is σ = 4332217440. Its totient is φ = 1074021120.

The previous prime is 2161322623. The next prime is 2161322641. The reversal of 2161322624 is 4262231612.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (2161322621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30932 + ... + 72659.

It is an arithmetic number, because the mean of its divisors is an integer number (135381795).

Almost surely, 2^2161322624 is an apocalyptic number.

It is an amenable number.

2161322624 is an abundant number, since it is smaller than the sum of its proper divisors (2170894816).

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

2161322624 is a wasteful number, since it uses less digits than its factorization.

2161322624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103768 (or 103756 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 2161322624 is about 46490.0271456148. The cubic root of 2161322624 is about 1292.9246034280.

The spelling of 2161322624 in words is "two billion, one hundred sixty-one million, three hundred twenty-two thousand, six hundred twenty-four".