653808790091 has 16 divisors (see below), whose sum is σ = 658273761600. Its totient is φ = 649363765248.

The previous prime is 653808790073. The next prime is 653808790111. The reversal of 653808790091 is 190097808356.

It is a cyclic number.

It is not a de Polignac number, because 653808790091 - 2⁶ = 653808790027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653808790021) 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 15 ways as a sum of consecutive naturals, for example, 104958965 + ... + 104965193.

It is an arithmetic number, because the mean of its divisors is an integer number (41142110100).

Almost surely, 2^653808790091 is an apocalyptic number.

653808790091 is a deficient number, since it is larger than the sum of its proper divisors (4464971509).

653808790091 is a wasteful number, since it uses less digits than its factorization.

653808790091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 653808790091 in words is "six hundred fifty-three billion, eight hundred eight million, seven hundred ninety thousand, ninety-one".