91003264061 has 2 divisors, whose sum is σ = 91003264062. Its totient is φ = 91003264060.

The previous prime is 91003264057. The next prime is 91003264109. The reversal of 91003264061 is 16046230019.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88458061561 + 2545202500 = 297419^2 + 50450^2 .

It is a cyclic number.

It is not a de Polignac number, because 91003264061 - 2² = 91003264057 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91003264021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45501632030 + 45501632031.

It is an arithmetic number, because the mean of its divisors is an integer number (45501632031).

Almost surely, 2^91003264061 is an apocalyptic number.

It is an amenable number.

91003264061 is a deficient number, since it is larger than the sum of its proper divisors (1).

91003264061 is an equidigital number, since it uses as much as digits as its factorization.

91003264061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 91003264061 in words is "ninety-one billion, three million, two hundred sixty-four thousand, sixty-one".