2681100621 has 16 divisors (see below), whose sum is σ = 4181054400. Its totient is φ = 1693326384.

The previous prime is 2681100619. The next prime is 2681100647. The reversal of 2681100621 is 1260011862.

2681100621 is a `hidden beast` number, since 26 + 8 + 1 + 10 + 0 + 621 = 666.

It is not a de Polignac number, because 2681100621 - 2¹ = 2681100619 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 (2681170621) 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, 2612646 + ... + 2613671.

It is an arithmetic number, because the mean of its divisors is an integer number (261315900).

Almost surely, 2^2681100621 is an apocalyptic number.

It is an amenable number.

2681100621 is a deficient number, since it is larger than the sum of its proper divisors (1499953779).

2681100621 is a wasteful number, since it uses less digits than its factorization.

2681100621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5226345 (or 5226339 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 2681100621 is about 51779.3455057130. The cubic root of 2681100621 is about 1389.2200342752.

The spelling of 2681100621 in words is "two billion, six hundred eighty-one million, one hundred thousand, six hundred twenty-one".