91004024461 has 12 divisors (see below), whose sum is σ = 109512233820. Its totient is φ = 75313674240.

The previous prime is 91004024459. The next prime is 91004024539. The reversal of 91004024461 is 16442040019.

It can be written as a sum of positive squares in 2 ways, for example, as 33271948836 + 57732075625 = 182406^2 + 240275^2 .

It is not a de Polignac number, because 91004024461 - 2¹ = 91004024459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91004025461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32019700 + ... + 32022541.

It is an arithmetic number, because the mean of its divisors is an integer number (9126019485).

Almost surely, 2^91004024461 is an apocalyptic number.

It is an amenable number.

91004024461 is a deficient number, since it is larger than the sum of its proper divisors (18508209359).

91004024461 is a wasteful number, since it uses less digits than its factorization.

91004024461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64042284 (or 64042277 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 91004024461 in words is "ninety-one billion, four million, twenty-four thousand, four hundred sixty-one".