653994879999 has 16 divisors (see below), whose sum is σ = 876266761440. Its totient is φ = 433865013120.

The previous prime is 653994879947. The next prime is 653994880039. The reversal of 653994879999 is 999978499356.

It is not a de Polignac number, because 653994879999 - 2¹³ = 653994871807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653994809999) 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, 150744 + ... + 1153565.

It is an arithmetic number, because the mean of its divisors is an integer number (54766672590).

Almost surely, 2^653994879999 is an apocalyptic number.

653994879999 is a deficient number, since it is larger than the sum of its proper divisors (222271881441).

653994879999 is a wasteful number, since it uses less digits than its factorization.

653994879999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305130.

The product of its digits is 10713850560, while the sum is 87.

The spelling of 653994879999 in words is "six hundred fifty-three billion, nine hundred ninety-four million, eight hundred seventy-nine thousand, nine hundred ninety-nine".