2645977209316 has 27 divisors (see below), whose sum is σ = 5386499964489. Its totient is φ = 1133980472688.

The previous prime is 2645977209301. The next prime is 2645977209329. The reversal of 2645977209316 is 6139027795462.

It is a happy number.

The square root of 2645977209316 is 1626646.

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., 379266295716 + 2266710913600 = 615846^2 + 1505560^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22714950 + ... + 22831138.

Almost surely, 2^{2645977209316} is an apocalyptic number.

2645977209316 is the 1626646-th square number.

It is an amenable number.

2645977209316 is an abundant number, since it is smaller than the sum of its proper divisors (2740522755173).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2645977209316 is an frugal number, since it uses more digits than its factorization.

2645977209316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232396 (or 116198 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 61.

The spelling of 2645977209316 in words is "two trillion, six hundred forty-five billion, nine hundred seventy-seven million, two hundred nine thousand, three hundred sixteen".