2081876722641 has 15 divisors (see below), whose sum is σ = 3109983391801. Its totient is φ = 1387909157868.

The previous prime is 2081876722619. The next prime is 2081876722657. The reversal of 2081876722641 is 1462276781802.

The square root of 2081876722641 is 1442871.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2081876722641 - 2²⁷ = 2081742504913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081876722141) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 12905680 + ... + 13065998.

Almost surely, 2^{2081876722641} is an apocalyptic number.

2081876722641 is the 1442871-st square number.

2081876722641 is the 721436-th centered octagonal number.

It is an amenable number.

2081876722641 is a deficient number, since it is larger than the sum of its proper divisors (1028106669160).

2081876722641 is an frugal number, since it uses more digits than its factorization.

2081876722641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320650 (or 160322 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 2081876722641 in words is "two trillion, eighty-one billion, eight hundred seventy-six million, seven hundred twenty-two thousand, six hundred forty-one".