42166645023 has 8 divisors (see below), whose sum is σ = 56384218368. Its totient is φ = 28030084184.

The previous prime is 42166645019. The next prime is 42166645069. The reversal of 42166645023 is 32054666124.

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

It is a cyclic number.

It is not a de Polignac number, because 42166645023 - 2² = 42166645019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42166645013) 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, 20251911 + ... + 20253992.

It is an arithmetic number, because the mean of its divisors is an integer number (7048027296).

Almost surely, 2^42166645023 is an apocalyptic number.

42166645023 is a deficient number, since it is larger than the sum of its proper divisors (14217573345).

42166645023 is a wasteful number, since it uses less digits than its factorization.

42166645023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40506253.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 42166645023 in words is "forty-two billion, one hundred sixty-six million, six hundred forty-five thousand, twenty-three".