91770528422351 has 2 divisors, whose sum is σ = 91770528422352. Its totient is φ = 91770528422350.

The previous prime is 91770528422341. The next prime is 91770528422383. The reversal of 91770528422351 is 15322482507719.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91770528422351 - 2³⁸ = 91495650515407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91770528422341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45885264211175 + 45885264211176.

It is an arithmetic number, because the mean of its divisors is an integer number (45885264211176).

Almost surely, 2^{91770528422351} is an apocalyptic number.

91770528422351 is a deficient number, since it is larger than the sum of its proper divisors (1).

91770528422351 is an equidigital number, since it uses as much as digits as its factorization.

91770528422351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 91770528422351 in words is "ninety-one trillion, seven hundred seventy billion, five hundred twenty-eight million, four hundred twenty-two thousand, three hundred fifty-one".