2577906403396 has 9 divisors (see below), whose sum is σ = 4511341825501. Its totient is φ = 1288951596112.

The previous prime is 2577906403381. The next prime is 2577906403399. The reversal of 2577906403396 is 6933046097752.

The square root of 2577906403396 is 1605586.

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

It can be written as a sum of positive squares in only one way, i.e., 2289683448900 + 288222954496 = 1513170^2 + 536864^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2577906403399) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2809776 + ... + 3612568.

Almost surely, 2^{2577906403396} is an apocalyptic number.

2577906403396 is the 1605586-th square number.

It is an amenable number.

2577906403396 is a deficient number, since it is larger than the sum of its proper divisors (1933435422105).

2577906403396 is an frugal number, since it uses more digits than its factorization.

2577906403396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605590 (or 802795 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 61.

The spelling of 2577906403396 in words is "two trillion, five hundred seventy-seven billion, nine hundred six million, four hundred three thousand, three hundred ninety-six".