2650131621 has 16 divisors (see below), whose sum is σ = 4061505600. Its totient is φ = 1705831344.

The previous prime is 2650131619. The next prime is 2650131661. The reversal of 2650131621 is 1261310562.

2650131621 is a `hidden beast` number, since 2 + 6 + 5 + 0 + 1 + 31 + 621 = 666.

It is not a de Polignac number, because 2650131621 - 2¹ = 2650131619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2650131611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1691511 + ... + 1693076.

It is an arithmetic number, because the mean of its divisors is an integer number (253844100).

Almost surely, 2^2650131621 is an apocalyptic number.

It is an amenable number.

2650131621 is a deficient number, since it is larger than the sum of its proper divisors (1411373979).

2650131621 is a wasteful number, since it uses less digits than its factorization.

2650131621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384625 (or 3384619 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2650131621 is about 51479.4291052261. The cubic root of 2650131621 is about 1383.8504140526.

The spelling of 2650131621 in words is "two billion, six hundred fifty million, one hundred thirty-one thousand, six hundred twenty-one".