90023178001 has 2 divisors, whose sum is σ = 90023178002. Its totient is φ = 90023178000.

The previous prime is 90023177999. The next prime is 90023178053. The reversal of 90023178001 is 10087132009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63214027776 + 26809150225 = 251424^2 + 163735^2 .

It is a cyclic number.

It is not a de Polignac number, because 90023178001 - 2¹ = 90023177999 is a prime.

Together with 90023177999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (90023178101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45011589000 + 45011589001.

It is an arithmetic number, because the mean of its divisors is an integer number (45011589001).

Almost surely, 2^90023178001 is an apocalyptic number.

It is an amenable number.

90023178001 is a deficient number, since it is larger than the sum of its proper divisors (1).

90023178001 is an equidigital number, since it uses as much as digits as its factorization.

90023178001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 90023178001 in words is "ninety billion, twenty-three million, one hundred seventy-eight thousand, one".