91282769437 has 2 divisors, whose sum is σ = 91282769438. Its totient is φ = 91282769436.

The previous prime is 91282769411. The next prime is 91282769467. The reversal of 91282769437 is 73496728219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74469497881 + 16813271556 = 272891^2 + 129666^2 .

It is a cyclic number.

It is not a de Polignac number, because 91282769437 - 2⁷ = 91282769309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91282769467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45641384718 + 45641384719.

It is an arithmetic number, because the mean of its divisors is an integer number (45641384719).

Almost surely, 2^91282769437 is an apocalyptic number.

It is an amenable number.

91282769437 is a deficient number, since it is larger than the sum of its proper divisors (1).

91282769437 is an equidigital number, since it uses as much as digits as its factorization.

91282769437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 58.

The spelling of 91282769437 in words is "ninety-one billion, two hundred eighty-two million, seven hundred sixty-nine thousand, four hundred thirty-seven".