2890721601651 has 16 divisors (see below), whose sum is σ = 4150830903296. Its totient is φ = 1778883672096.

The previous prime is 2890721601643. The next prime is 2890721601653. The reversal of 2890721601651 is 1561061270982.

It is a happy number.

It is not a de Polignac number, because 2890721601651 - 2³ = 2890721601643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2890721601651.

It is not an unprimeable number, because it can be changed into a prime (2890721601653) 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, 3097476 + ... + 3921198.

It is an arithmetic number, because the mean of its divisors is an integer number (259426931456).

Almost surely, 2^{2890721601651} is an apocalyptic number.

2890721601651 is a deficient number, since it is larger than the sum of its proper divisors (1260109301645).

2890721601651 is a wasteful number, since it uses less digits than its factorization.

2890721601651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913722.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 2890721601651 in words is "two trillion, eight hundred ninety billion, seven hundred twenty-one million, six hundred one thousand, six hundred fifty-one".