90912032971 has 2 divisors, whose sum is σ = 90912032972. Its totient is φ = 90912032970.

The previous prime is 90912032969. The next prime is 90912032987. The reversal of 90912032971 is 17923021909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90912032971 - 2¹ = 90912032969 is a prime.

Together with 90912032969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (90912032951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45456016485 + 45456016486.

It is an arithmetic number, because the mean of its divisors is an integer number (45456016486).

Almost surely, 2^90912032971 is an apocalyptic number.

90912032971 is a deficient number, since it is larger than the sum of its proper divisors (1).

90912032971 is an equidigital number, since it uses as much as digits as its factorization.

90912032971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 43.

The spelling of 90912032971 in words is "ninety billion, nine hundred twelve million, thirty-two thousand, nine hundred seventy-one".