920322132745591 has 2 divisors, whose sum is σ = 920322132745592. Its totient is φ = 920322132745590.

The previous prime is 920322132745583. The next prime is 920322132745601. The reversal of 920322132745591 is 195547231223029.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 920322132745591 - 2³ = 920322132745583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920322132745511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460161066372795 + 460161066372796.

It is an arithmetic number, because the mean of its divisors is an integer number (460161066372796).

Almost surely, 2^{920322132745591} is an apocalyptic number.

920322132745591 is a deficient number, since it is larger than the sum of its proper divisors (1).

920322132745591 is an equidigital number, since it uses as much as digits as its factorization.

920322132745591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 920322132745591 in words is "nine hundred twenty trillion, three hundred twenty-two billion, one hundred thirty-two million, seven hundred forty-five thousand, five hundred ninety-one".