55715199893 has 2 divisors, whose sum is σ = 55715199894. Its totient is φ = 55715199892.

The previous prime is 55715199887. The next prime is 55715199919. The reversal of 55715199893 is 39899151755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34926750769 + 20788449124 = 186887^2 + 144182^2 .

It is a cyclic number.

It is not a de Polignac number, because 55715199893 - 2⁸ = 55715199637 is a prime.

It is a super-2 number, since 2×55715199893² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55715193893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27857599946 + 27857599947.

It is an arithmetic number, because the mean of its divisors is an integer number (27857599947).

Almost surely, 2^55715199893 is an apocalyptic number.

It is an amenable number.

55715199893 is a deficient number, since it is larger than the sum of its proper divisors (1).

55715199893 is an equidigital number, since it uses as much as digits as its factorization.

55715199893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15309000, while the sum is 62.

The spelling of 55715199893 in words is "fifty-five billion, seven hundred fifteen million, one hundred ninety-nine thousand, eight hundred ninety-three".