2649045952921 has 9 divisors (see below), whose sum is σ = 2654043916629. Its totient is φ = 2644057392636.

The previous prime is 2649045952919. The next prime is 2649045953003. The reversal of 2649045952921 is 1292595409462.

The square root of 2649045952921 is 1627589.

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

2649045952921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2649045952921 - 2¹ = 2649045952919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2649045052921) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1111642096 + ... + 1111644478.

Almost surely, 2^{2649045952921} is an apocalyptic number.

2649045952921 is the 1627589-th square number.

2649045952921 is the 813795-th centered octagonal number.

It is an amenable number.

2649045952921 is a deficient number, since it is larger than the sum of its proper divisors (4997963708).

2649045952921 is an frugal number, since it uses more digits than its factorization.

2649045952921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6132 (or 3066 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 58.

The spelling of 2649045952921 in words is "two trillion, six hundred forty-nine billion, forty-five million, nine hundred fifty-two thousand, nine hundred twenty-one".