91060148009 has 2 divisors, whose sum is σ = 91060148010. Its totient is φ = 91060148008.

The previous prime is 91060147967. The next prime is 91060148041. The reversal of 91060148009 is 90084106019.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71885653225 + 19174494784 = 268115^2 + 138472^2 .

It is a cyclic number.

It is not a de Polignac number, because 91060148009 - 2⁸ = 91060147753 is a prime.

It is not a weakly prime, because it can be changed into another prime (91060148089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45530074004 + 45530074005.

It is an arithmetic number, because the mean of its divisors is an integer number (45530074005).

Almost surely, 2^91060148009 is an apocalyptic number.

It is an amenable number.

91060148009 is a deficient number, since it is larger than the sum of its proper divisors (1).

91060148009 is an equidigital number, since it uses as much as digits as its factorization.

91060148009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 91060148009 in words is "ninety-one billion, sixty million, one hundred forty-eight thousand, nine".