2052077763721 has 4 divisors (see below), whose sum is σ = 2072395365444. Its totient is φ = 2031760162000.

The previous prime is 2052077763653. The next prime is 2052077763727. The reversal of 2052077763721 is 1273677702502.

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 916011697225 + 1136066066496 = 957085^2 + 1065864^2 .

It is a cyclic number.

It is not a de Polignac number, because 2052077763721 - 2²⁵ = 2052044209289 is a prime.

It is a super-2 number, since 2×2052077763721² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2052077763727) 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, 10158800710 + ... + 10158800911.

It is an arithmetic number, because the mean of its divisors is an integer number (518098841361).

Almost surely, 2^{2052077763721} is an apocalyptic number.

It is an amenable number.

2052077763721 is a deficient number, since it is larger than the sum of its proper divisors (20317601723).

2052077763721 is a wasteful number, since it uses less digits than its factorization.

2052077763721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20317601722.

The product of its (nonzero) digits is 1728720, while the sum is 49.

The spelling of 2052077763721 in words is "two trillion, fifty-two billion, seventy-seven million, seven hundred sixty-three thousand, seven hundred twenty-one".