123273982491 has 8 divisors (see below), whose sum is σ = 179307610944. Its totient is φ = 74711504520.

The previous prime is 123273982483. The next prime is 123273982603. The reversal of 123273982491 is 194289372321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123273982491 - 2³ = 123273982483 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (123273982411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1867787581 + ... + 1867787646.

It is an arithmetic number, because the mean of its divisors is an integer number (22413451368).

Almost surely, 2^123273982491 is an apocalyptic number.

123273982491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123273982491 is a deficient number, since it is larger than the sum of its proper divisors (56033628453).

123273982491 is a wasteful number, since it uses less digits than its factorization.

123273982491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735575241.

The product of its digits is 1306368, while the sum is 51.

The spelling of 123273982491 in words is "one hundred twenty-three billion, two hundred seventy-three million, nine hundred eighty-two thousand, four hundred ninety-one".