93690971917 has 2 divisors, whose sum is σ = 93690971918. Its totient is φ = 93690971916.

The previous prime is 93690971903. The next prime is 93690971939. The reversal of 93690971917 is 71917909639.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61098446761 + 32592525156 = 247181^2 + 180534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93690971917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93690971317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46845485958 + 46845485959.

It is an arithmetic number, because the mean of its divisors is an integer number (46845485959).

Almost surely, 2^93690971917 is an apocalyptic number.

It is an amenable number.

93690971917 is a deficient number, since it is larger than the sum of its proper divisors (1).

93690971917 is an equidigital number, since it uses as much as digits as its factorization.

93690971917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5786802, while the sum is 61.

The spelling of 93690971917 in words is "ninety-three billion, six hundred ninety million, nine hundred seventy-one thousand, nine hundred seventeen".