42155166545 has 8 divisors (see below), whose sum is σ = 50587442880. Its totient is φ = 33723304560.

The previous prime is 42155166503. The next prime is 42155166589. The reversal of 42155166545 is 54566155124.

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

It is a de Polignac number, because none of the positive numbers 2^k-42155166545 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42155166496 and 42155166505.

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, 202430 + ... + 353960.

It is an arithmetic number, because the mean of its divisors is an integer number (6323430360).

Almost surely, 2^42155166545 is an apocalyptic number.

It is an amenable number.

42155166545 is a deficient number, since it is larger than the sum of its proper divisors (8432276335).

42155166545 is a wasteful number, since it uses less digits than its factorization.

42155166545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207175.

The product of its digits is 720000, while the sum is 44.

The spelling of 42155166545 in words is "forty-two billion, one hundred fifty-five million, one hundred sixty-six thousand, five hundred forty-five".