9091628928761 has 2 divisors, whose sum is σ = 9091628928762. Its totient is φ = 9091628928760.

The previous prime is 9091628928691. The next prime is 9091628928779. The reversal of 9091628928761 is 1678298261909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8209691945536 + 881936983225 = 2865256^2 + 939115^2 .

It is a cyclic number.

It is not a de Polignac number, because 9091628928761 - 2²² = 9091624734457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9091628928691 and 9091628928700.

It is not a weakly prime, because it can be changed into another prime (9091628828761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545814464380 + 4545814464381.

It is an arithmetic number, because the mean of its divisors is an integer number (4545814464381).

Almost surely, 2^{9091628928761} is an apocalyptic number.

It is an amenable number.

9091628928761 is a deficient number, since it is larger than the sum of its proper divisors (1).

9091628928761 is an equidigital number, since it uses as much as digits as its factorization.

9091628928761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47029248, while the sum is 68.

The spelling of 9091628928761 in words is "nine trillion, ninety-one billion, six hundred twenty-eight million, nine hundred twenty-eight thousand, seven hundred sixty-one".