2616728346621 has 96 divisors (see below), whose sum is σ = 4046189347200. Its totient is φ = 1624882913280.

The previous prime is 2616728346613. The next prime is 2616728346629. The reversal of 2616728346621 is 1266438276162.

2616728346621 is a `hidden beast` number, since 2 + 6 + 1 + 6 + 7 + 2 + 8 + 3 + 4 + 6 + 621 = 666.

It is an interprime number because it is at equal distance from previous prime (2616728346613) and next prime (2616728346629).

It is not a de Polignac number, because 2616728346621 - 2³ = 2616728346613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2616728346629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1980868641 + ... + 1980869961.

It is an arithmetic number, because the mean of its divisors is an integer number (42147805700).

Almost surely, 2^{2616728346621} is an apocalyptic number.

It is an amenable number.

2616728346621 is a deficient number, since it is larger than the sum of its proper divisors (1429461000579).

2616728346621 is a wasteful number, since it uses less digits than its factorization.

2616728346621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139 (or 2136 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 2616728346621 in words is "two trillion, six hundred sixteen billion, seven hundred twenty-eight million, three hundred forty-six thousand, six hundred twenty-one".