2772420012745 has 4 divisors (see below), whose sum is σ = 3326904015300. Its totient is φ = 2217936010192.

The previous prime is 2772420012721. The next prime is 2772420012749. The reversal of 2772420012745 is 5472100242772.

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 330160563216 + 2442259449529 = 574596^2 + 1562773^2 .

It is a cyclic number.

It is not a de Polignac number, because 2772420012745 - 2⁷ = 2772420012617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2772420012749) 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, 277242001270 + ... + 277242001279.

It is an arithmetic number, because the mean of its divisors is an integer number (831726003825).

Almost surely, 2^{2772420012745} is an apocalyptic number.

It is an amenable number.

2772420012745 is a deficient number, since it is larger than the sum of its proper divisors (554484002555).

2772420012745 is an equidigital number, since it uses as much as digits as its factorization.

2772420012745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554484002554.

The product of its (nonzero) digits is 439040, while the sum is 43.

The spelling of 2772420012745 in words is "two trillion, seven hundred seventy-two billion, four hundred twenty million, twelve thousand, seven hundred forty-five".