91001449233001 has 2 divisors, whose sum is σ = 91001449233002. Its totient is φ = 91001449233000.

The previous prime is 91001449232983. The next prime is 91001449233011. The reversal of 91001449233001 is 10033294410019.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90853285826601 + 148163406400 = 9531699^2 + 384920^2 .

It is a cyclic number.

It is not a de Polignac number, because 91001449233001 - 2¹³ = 91001449224809 is a prime.

It is not a weakly prime, because it can be changed into another prime (91001449233011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45500724616500 + 45500724616501.

It is an arithmetic number, because the mean of its divisors is an integer number (45500724616501).

Almost surely, 2^{91001449233001} is an apocalyptic number.

It is an amenable number.

91001449233001 is a deficient number, since it is larger than the sum of its proper divisors (1).

91001449233001 is an equidigital number, since it uses as much as digits as its factorization.

91001449233001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 91001449233001 in words is "ninety-one trillion, one billion, four hundred forty-nine million, two hundred thirty-three thousand, one".