66737774001 has 8 divisors (see below), whose sum is σ = 89022718624. Its totient is φ = 44472339360.

The previous prime is 66737773997. The next prime is 66737774003. The reversal of 66737774001 is 10047773766.

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

It is not a de Polignac number, because 66737774001 - 2² = 66737773997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66737774003) 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, 4869511 + ... + 4883196.

It is an arithmetic number, because the mean of its divisors is an integer number (11127839828).

Almost surely, 2^66737774001 is an apocalyptic number.

It is an amenable number.

66737774001 is a deficient number, since it is larger than the sum of its proper divisors (22284944623).

66737774001 is a wasteful number, since it uses less digits than its factorization.

66737774001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9754991.

The product of its (nonzero) digits is 1037232, while the sum is 48.

The spelling of 66737774001 in words is "sixty-six billion, seven hundred thirty-seven million, seven hundred seventy-four thousand, one".