2772635605645 has 16 divisors (see below), whose sum is σ = 3383318442240. Its totient is φ = 2180982024000.

The previous prime is 2772635605627. The next prime is 2772635605667. The reversal of 2772635605645 is 5465065362772.

It is not a de Polignac number, because 2772635605645 - 2⁹ = 2772635605133 is a prime.

It is a super-3 number, since 3×2772635605645³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2772635605645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19346181 + ... + 19488970.

It is an arithmetic number, because the mean of its divisors is an integer number (211457402640).

Almost surely, 2^{2772635605645} is an apocalyptic number.

It is an amenable number.

2772635605645 is a deficient number, since it is larger than the sum of its proper divisors (610682836595).

2772635605645 is a wasteful number, since it uses less digits than its factorization.

2772635605645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38835396.

The product of its (nonzero) digits is 63504000, while the sum is 58.

The spelling of 2772635605645 in words is "two trillion, seven hundred seventy-two billion, six hundred thirty-five million, six hundred five thousand, six hundred forty-five".