2621611672 has 16 divisors (see below), whose sum is σ = 4940226000. Its totient is φ = 1304218080.

The previous prime is 2621611661. The next prime is 2621611673. The reversal of 2621611672 is 2761161262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621611673) 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, 821779 + ... + 824962.

It is an arithmetic number, because the mean of its divisors is an integer number (308764125).

Almost surely, 2^2621611672 is an apocalyptic number.

It is an amenable number.

2621611672 is a deficient number, since it is larger than the sum of its proper divisors (2318614328).

2621611672 is a wasteful number, since it uses less digits than its factorization.

2621611672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646946 (or 1646942 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 2621611672 is about 51201.6764569286. The cubic root of 2621611672 is about 1378.8682999308.

The spelling of 2621611672 in words is "two billion, six hundred twenty-one million, six hundred eleven thousand, six hundred seventy-two".