66691051342 has 8 divisors (see below), whose sum is σ = 101529660456. Its totient is φ = 32847831192.

The previous prime is 66691051337. The next prime is 66691051379. The reversal of 66691051342 is 24315019666.

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

It is a congruent number.

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, 248847073 + ... + 248847340.

It is an arithmetic number, because the mean of its divisors is an integer number (12691207557).

Almost surely, 2^66691051342 is an apocalyptic number.

66691051342 is a deficient number, since it is larger than the sum of its proper divisors (34838609114).

66691051342 is a wasteful number, since it uses less digits than its factorization.

66691051342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497694482.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 66691051342 in words is "sixty-six billion, six hundred ninety-one million, fifty-one thousand, three hundred forty-two".