2081309930901 has 6 divisors (see below), whose sum is σ = 3006336566870. Its totient is φ = 1387539953928.

The previous prime is 2081309930881. The next prime is 2081309930939. The reversal of 2081309930901 is 1090399031802.

It is a happy number.

2081309930901 is a `hidden beast` number, since 208 + 130 + 9 + 9 + 309 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1191429008676 + 889880922225 = 1091526^2 + 943335^2 .

It is not a de Polignac number, because 2081309930901 - 2⁷ = 2081309930773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081309930101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115628329486 + ... + 115628329503.

Almost surely, 2^{2081309930901} is an apocalyptic number.

It is an amenable number.

2081309930901 is a deficient number, since it is larger than the sum of its proper divisors (925026635969).

2081309930901 is a wasteful number, since it uses less digits than its factorization.

2081309930901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231256658995 (or 231256658992 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 2081309930901 in words is "two trillion, eighty-one billion, three hundred nine million, nine hundred thirty thousand, nine hundred one".