616235400653 has 2 divisors, whose sum is σ = 616235400654. Its totient is φ = 616235400652.

The previous prime is 616235400581. The next prime is 616235400691. The reversal of 616235400653 is 356004532616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354564275209 + 261671125444 = 595453^2 + 511538^2 .

It is a cyclic number.

It is not a de Polignac number, because 616235400653 - 2¹⁸ = 616235138509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616235400653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616235400353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308117700326 + 308117700327.

It is an arithmetic number, because the mean of its divisors is an integer number (308117700327).

Almost surely, 2^616235400653 is an apocalyptic number.

It is an amenable number.

616235400653 is a deficient number, since it is larger than the sum of its proper divisors (1).

616235400653 is an equidigital number, since it uses as much as digits as its factorization.

616235400653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 616235400653 in words is "six hundred sixteen billion, two hundred thirty-five million, four hundred thousand, six hundred fifty-three".