18966023940578 has 32 divisors (see below), whose sum is σ = 33481383143040. Its totient is φ = 7943786674560.

The previous prime is 18966023940551. The next prime is 18966023940601. The reversal of 18966023940578 is 87504932066981.

It is a super-2 number, since 2×18966023940578² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58110350 + ... + 58435817.

It is an arithmetic number, because the mean of its divisors is an integer number (1046293223220).

It is a 4-persistent number, because k⋅18966023940578 is pandigital for 1 ≤ k ≤ 4, but not for k = 5.

Almost surely, 2^{18966023940578} is an apocalyptic number.

18966023940578 is a deficient number, since it is larger than the sum of its proper divisors (14515359202462).

18966023940578 is a wasteful number, since it uses less digits than its factorization.

18966023940578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116546762.

The product of its (nonzero) digits is 156764160, while the sum is 68.

The spelling of 18966023940578 in words is "eighteen trillion, nine hundred sixty-six billion, twenty-three million, nine hundred forty thousand, five hundred seventy-eight".