90681964103 has 2 divisors, whose sum is σ = 90681964104. Its totient is φ = 90681964102.

The previous prime is 90681964081. The next prime is 90681964133. The reversal of 90681964103 is 30146918609.

It is a weak prime.

It is an emirp because it is prime and its reverse (30146918609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90681964103 - 2⁶ = 90681964039 is a prime.

It is a super-2 number, since 2×90681964103² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90681964133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45340982051 + 45340982052.

It is an arithmetic number, because the mean of its divisors is an integer number (45340982052).

Almost surely, 2^90681964103 is an apocalyptic number.

90681964103 is a deficient number, since it is larger than the sum of its proper divisors (1).

90681964103 is an equidigital number, since it uses as much as digits as its factorization.

90681964103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 90681964103 in words is "ninety billion, six hundred eighty-one million, nine hundred sixty-four thousand, one hundred three".