653990734899 has 6 divisors (see below), whose sum is σ = 944653283756. Its totient is φ = 435993823260.

The previous prime is 653990734861. The next prime is 653990734909. The reversal of 653990734899 is 998437099356.

653990734899 is a `hidden beast` number, since 6 + 53 + 9 + 90 + 7 + 3 + 489 + 9 = 666.

It is not a de Polignac number, because 653990734899 - 2¹⁹ = 653990210611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653990734849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36332818597 + ... + 36332818614.

Almost surely, 2^653990734899 is an apocalyptic number.

653990734899 is a deficient number, since it is larger than the sum of its proper divisors (290662548857).

653990734899 is a wasteful number, since it uses less digits than its factorization.

653990734899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72665637217 (or 72665637214 counting only the distinct ones).

The product of its (nonzero) digits is 396809280, while the sum is 72.

The spelling of 653990734899 in words is "six hundred fifty-three billion, nine hundred ninety million, seven hundred thirty-four thousand, eight hundred ninety-nine".