91061444837347 has 2 divisors, whose sum is σ = 91061444837348. Its totient is φ = 91061444837346.

The previous prime is 91061444837329. The next prime is 91061444837401. The reversal of 91061444837347 is 74373844416019.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91061444837347 is a prime.

It is not a weakly prime, because it can be changed into another prime (91061444831347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45530722418673 + 45530722418674.

It is an arithmetic number, because the mean of its divisors is an integer number (45530722418674).

Almost surely, 2^{91061444837347} is an apocalyptic number.

91061444837347 is a deficient number, since it is larger than the sum of its proper divisors (1).

91061444837347 is an equidigital number, since it uses as much as digits as its factorization.

91061444837347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48771072, while the sum is 61.

The spelling of 91061444837347 in words is "ninety-one trillion, sixty-one billion, four hundred forty-four million, eight hundred thirty-seven thousand, three hundred forty-seven".