213657600653 has 6 divisors (see below), whose sum is σ = 248540474286. Its totient is φ = 183135086232.

The previous prime is 213657600649. The next prime is 213657600683. The reversal of 213657600653 is 356006756312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 212500716484 + 1156884169 = 460978^2 + 34013^2 .

It is not a de Polignac number, because 213657600653 - 2² = 213657600649 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 (213657600623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2180179550 + ... + 2180179647.

It is an arithmetic number, because the mean of its divisors is an integer number (41423412381).

Almost surely, 2^213657600653 is an apocalyptic number.

It is an amenable number.

213657600653 is a deficient number, since it is larger than the sum of its proper divisors (34882873633).

213657600653 is an equidigital number, since it uses as much as digits as its factorization.

213657600653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360359211 (or 4360359204 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 213657600653 in words is "two hundred thirteen billion, six hundred fifty-seven million, six hundred thousand, six hundred fifty-three".