91741531405747 has 2 divisors, whose sum is σ = 91741531405748. Its totient is φ = 91741531405746.

The previous prime is 91741531405739. The next prime is 91741531405757. The reversal of 91741531405747 is 74750413514719.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91741531405747 - 2³ = 91741531405739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91741531405691 and 91741531405700.

It is not a weakly prime, because it can be changed into another prime (91741531405757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45870765702873 + 45870765702874.

It is an arithmetic number, because the mean of its divisors is an integer number (45870765702874).

Almost surely, 2^{91741531405747} is an apocalyptic number.

91741531405747 is a deficient number, since it is larger than the sum of its proper divisors (1).

91741531405747 is an equidigital number, since it uses as much as digits as its factorization.

91741531405747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14817600, while the sum is 58.

The spelling of 91741531405747 in words is "ninety-one trillion, seven hundred forty-one billion, five hundred thirty-one million, four hundred five thousand, seven hundred forty-seven".