10491890225985 has 48 divisors (see below), whose sum is σ = 20785461540480. Its totient is φ = 4795940378880.

The previous prime is 10491890225977. The next prime is 10491890226019. The reversal of 10491890225985 is 58952209819401.

10491890225985 is a `hidden beast` number, since 1 + 0 + 4 + 9 + 18 + 9 + 0 + 22 + 598 + 5 = 666.

It is not a de Polignac number, because 10491890225985 - 2³ = 10491890225977 is a prime.

It is a super-2 number, since 2×10491890225985² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3096261 + ... + 5529069.

It is an arithmetic number, because the mean of its divisors is an integer number (433030448760).

Almost surely, 2^{10491890225985} is an apocalyptic number.

10491890225985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10491890225985 is a deficient number, since it is larger than the sum of its proper divisors (10293571314495).

10491890225985 is a wasteful number, since it uses less digits than its factorization.

10491890225985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446518 (or 2446515 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 63.

The spelling of 10491890225985 in words is "ten trillion, four hundred ninety-one billion, eight hundred ninety million, two hundred twenty-five thousand, nine hundred eighty-five".