1273823123018 has 8 divisors (see below), whose sum is σ = 1918729391040. Its totient is φ = 634246659340.

The previous prime is 1273823122967. The next prime is 1273823123039. The reversal of 1273823123018 is 8103213283721.

It is a happy number.

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

It is a super-2 number, since 2×1273823123018² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332450488 + ... + 1332451443.

It is an arithmetic number, because the mean of its divisors is an integer number (239841173880).

Almost surely, 2^{1273823123018} is an apocalyptic number.

1273823123018 is a deficient number, since it is larger than the sum of its proper divisors (644906268022).

1273823123018 is a wasteful number, since it uses less digits than its factorization.

1273823123018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664902172.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 1273823123018 in words is "one trillion, two hundred seventy-three billion, eight hundred twenty-three million, one hundred twenty-three thousand, eighteen".