66031189497268 has 24 divisors (see below), whose sum is σ = 118262005030400. Its totient is φ = 32242306340160.

The previous prime is 66031189497257. The next prime is 66031189497269. The reversal of 66031189497268 is 86279498113066.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66031189497197 and 66031189497206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66031189497269) 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, 31627668 + ... + 33650731.

Almost surely, 2^{66031189497268} is an apocalyptic number.

It is an amenable number.

66031189497268 is a deficient number, since it is larger than the sum of its proper divisors (52230815533132).

66031189497268 is a wasteful number, since it uses less digits than its factorization.

66031189497268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65284327 (or 65284325 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 70.

The spelling of 66031189497268 in words is "sixty-six trillion, thirty-one billion, one hundred eighty-nine million, four hundred ninety-seven thousand, two hundred sixty-eight".