90893971671911 has 2 divisors, whose sum is σ = 90893971671912. Its totient is φ = 90893971671910.

The previous prime is 90893971671857. The next prime is 90893971671947. The reversal of 90893971671911 is 11917617939809.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90893971671911 - 2⁴² = 86495925160807 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90893971371911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45446985835955 + 45446985835956.

It is an arithmetic number, because the mean of its divisors is an integer number (45446985835956).

Almost surely, 2^{90893971671911} is an apocalyptic number.

90893971671911 is a deficient number, since it is larger than the sum of its proper divisors (1).

90893971671911 is an equidigital number, since it uses as much as digits as its factorization.

90893971671911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46294416, while the sum is 71.

The spelling of 90893971671911 in words is "ninety trillion, eight hundred ninety-three billion, nine hundred seventy-one million, six hundred seventy-one thousand, nine hundred eleven".