653879978356 has 48 divisors (see below), whose sum is σ = 1260103078080. Its totient is φ = 294413253120.

The previous prime is 653879978351. The next prime is 653879978393.

653879978356 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653879978351) 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, 20477355 + ... + 20509261.

It is an arithmetic number, because the mean of its divisors is an integer number (26252147460).

Almost surely, 2^653879978356 is an apocalyptic number.

It is an amenable number.

653879978356 is a deficient number, since it is larger than the sum of its proper divisors (606223099724).

653879978356 is a wasteful number, since it uses less digits than its factorization.

653879978356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36304 (or 36302 counting only the distinct ones).

The product of its digits is 2057529600, while the sum is 76.

The spelling of 653879978356 in words is "six hundred fifty-three billion, eight hundred seventy-nine million, nine hundred seventy-eight thousand, three hundred fifty-six".