15955609853 has 2 divisors, whose sum is σ = 15955609854. Its totient is φ = 15955609852.

The previous prime is 15955609807. The next prime is 15955609861. The reversal of 15955609853 is 35890655951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13059232729 + 2896377124 = 114277^2 + 53818^2 .

It is a cyclic number.

It is not a de Polignac number, because 15955609853 - 2⁸ = 15955609597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15958609853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7977804926 + 7977804927.

It is an arithmetic number, because the mean of its divisors is an integer number (7977804927).

Almost surely, 2^15955609853 is an apocalyptic number.

It is an amenable number.

15955609853 is a deficient number, since it is larger than the sum of its proper divisors (1).

15955609853 is an equidigital number, since it uses as much as digits as its factorization.

15955609853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290000, while the sum is 56.

The spelling of 15955609853 in words is "fifteen billion, nine hundred fifty-five million, six hundred nine thousand, eight hundred fifty-three".