3077819272021 has 4 divisors (see below), whose sum is σ = 3314574600652. Its totient is φ = 2841063943392.

The previous prime is 3077819271983. The next prime is 3077819272051. The reversal of 3077819272021 is 1202729187703.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1952416549521 + 1125402722500 = 1397289^2 + 1060850^2 .

It is a cyclic number.

It is not a de Polignac number, because 3077819272021 - 2²⁷ = 3077685054293 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 (3077819272051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118377664296 + ... + 118377664321.

It is an arithmetic number, because the mean of its divisors is an integer number (828643650163).

Almost surely, 2^{3077819272021} is an apocalyptic number.

It is an amenable number.

3077819272021 is a deficient number, since it is larger than the sum of its proper divisors (236755328631).

3077819272021 is a wasteful number, since it uses less digits than its factorization.

3077819272021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236755328630.

The product of its (nonzero) digits is 592704, while the sum is 49.

The spelling of 3077819272021 in words is "three trillion, seventy-seven billion, eight hundred nineteen million, two hundred seventy-two thousand, twenty-one".