18132071578 has 8 divisors (see below), whose sum is σ = 27604049472. Its totient is φ = 8930721756.

The previous prime is 18132071567. The next prime is 18132071603. The reversal of 18132071578 is 87517023181.

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

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, 67656850 + ... + 67657117.

It is an arithmetic number, because the mean of its divisors is an integer number (3450506184).

Almost surely, 2^18132071578 is an apocalyptic number.

18132071578 is a deficient number, since it is larger than the sum of its proper divisors (9471977894).

18132071578 is a wasteful number, since it uses less digits than its factorization.

18132071578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135314036.

The product of its (nonzero) digits is 94080, while the sum is 43.

The spelling of 18132071578 in words is "eighteen billion, one hundred thirty-two million, seventy-one thousand, five hundred seventy-eight".