2621656372 has 12 divisors (see below), whose sum is σ = 4601761696. Its totient is φ = 1306867320.

The previous prime is 2621656361. The next prime is 2621656393. The reversal of 2621656372 is 2736561262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988728 + ... + 991375.

Almost surely, 2^2621656372 is an apocalyptic number.

It is an amenable number.

2621656372 is a deficient number, since it is larger than the sum of its proper divisors (1980105324).

2621656372 is a wasteful number, since it uses less digits than its factorization.

2621656372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980438 (or 1980436 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 2621656372 is about 51202.1129642127. The cubic root of 2621656372 is about 1378.8761367211.

The spelling of 2621656372 in words is "two billion, six hundred twenty-one million, six hundred fifty-six thousand, three hundred seventy-two".