90461398491 has 6 divisors (see below), whose sum is σ = 130666464500. Its totient is φ = 60307598988.

The previous prime is 90461398471. The next prime is 90461398513. The reversal of 90461398491 is 19489316409.

It is a happy number.

90461398491 is a `hidden beast` number, since 9 + 0 + 4 + 61 + 3 + 98 + 491 = 666.

It is not a de Polignac number, because 90461398491 - 2¹⁷ = 90461267419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90461398441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5025633241 + ... + 5025633258.

Almost surely, 2^90461398491 is an apocalyptic number.

90461398491 is a deficient number, since it is larger than the sum of its proper divisors (40205066009).

90461398491 is a wasteful number, since it uses less digits than its factorization.

90461398491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051266505 (or 10051266502 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 90461398491 in words is "ninety billion, four hundred sixty-one million, three hundred ninety-eight thousand, four hundred ninety-one".