66949112407 has 8 divisors (see below), whose sum is σ = 69332281200. Its totient is φ = 64570915584.

The previous prime is 66949112387. The next prime is 66949112423. The reversal of 66949112407 is 70421194966.

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-66949112407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66949112107) 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, 1215573 + ... + 1269454.

It is an arithmetic number, because the mean of its divisors is an integer number (8666535150).

Almost surely, 2^66949112407 is an apocalyptic number.

66949112407 is a deficient number, since it is larger than the sum of its proper divisors (2383168793).

66949112407 is a wasteful number, since it uses less digits than its factorization.

66949112407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485985.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 66949112407 in words is "sixty-six billion, nine hundred forty-nine million, one hundred twelve thousand, four hundred seven".