18797237312446 has 16 divisors (see below), whose sum is σ = 28335700036224. Its totient is φ = 9352043864064.

The previous prime is 18797237312363. The next prime is 18797237312473. The reversal of 18797237312446 is 64421373279781.

It is a super-2 number, since 2×18797237312446² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9030691 + ... + 10915486.

It is an arithmetic number, because the mean of its divisors is an integer number (1770981252264).

Almost surely, 2^{18797237312446} is an apocalyptic number.

18797237312446 is a deficient number, since it is larger than the sum of its proper divisors (9538462723778).

18797237312446 is a wasteful number, since it uses less digits than its factorization.

18797237312446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19948515.

The product of its digits is 85349376, while the sum is 64.

The spelling of 18797237312446 in words is "eighteen trillion, seven hundred ninety-seven billion, two hundred thirty-seven million, three hundred twelve thousand, four hundred forty-six".