2945663553 has 16 divisors (see below), whose sum is σ = 4489926656. Its totient is φ = 1682750160.

The previous prime is 2945663533. The next prime is 2945663563. The reversal of 2945663553 is 3553665492.

It is not a de Polignac number, because 2945663553 - 2⁶ = 2945663489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2945663503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61938 + ... + 98628.

It is an arithmetic number, because the mean of its divisors is an integer number (280620416).

Almost surely, 2^2945663553 is an apocalyptic number.

It is an amenable number.

2945663553 is a deficient number, since it is larger than the sum of its proper divisors (1544263103).

2945663553 is a wasteful number, since it uses less digits than its factorization.

2945663553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40524.

The product of its digits is 2916000, while the sum is 48.

The square root of 2945663553 is about 54273.9675443025. The cubic root of 2945663553 is about 1433.4890518339.

The spelling of 2945663553 in words is "two billion, nine hundred forty-five million, six hundred sixty-three thousand, five hundred fifty-three".