653969552399 has 4 divisors (see below), whose sum is σ = 655945291560. Its totient is φ = 651993813240.

The previous prime is 653969552389. The next prime is 653969552407. The reversal of 653969552399 is 993255969356.

653969552399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 653969552399 - 2⁸ = 653969552143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653969552389) 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, 987869084 + ... + 987869745.

It is an arithmetic number, because the mean of its divisors is an integer number (163986322890).

Almost surely, 2^653969552399 is an apocalyptic number.

653969552399 is a deficient number, since it is larger than the sum of its proper divisors (1975739161).

653969552399 is a wasteful number, since it uses less digits than its factorization.

653969552399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975739160.

The product of its digits is 531441000, while the sum is 71.

The spelling of 653969552399 in words is "six hundred fifty-three billion, nine hundred sixty-nine million, five hundred fifty-two thousand, three hundred ninety-nine".