90970720133 has 2 divisors, whose sum is σ = 90970720134. Its totient is φ = 90970720132.

The previous prime is 90970720069. The next prime is 90970720153. The reversal of 90970720133 is 33102707909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78311544964 + 12659175169 = 279842^2 + 112513^2 .

It is a cyclic number.

It is not a de Polignac number, because 90970720133 - 2⁶ = 90970720069 is a prime.

It is a super-2 number, since 2×90970720133² (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 (90970720153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45485360066 + 45485360067.

It is an arithmetic number, because the mean of its divisors is an integer number (45485360067).

Almost surely, 2^90970720133 is an apocalyptic number.

It is an amenable number.

90970720133 is a deficient number, since it is larger than the sum of its proper divisors (1).

90970720133 is an equidigital number, since it uses as much as digits as its factorization.

90970720133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 41.

The spelling of 90970720133 in words is "ninety billion, nine hundred seventy million, seven hundred twenty thousand, one hundred thirty-three".