139966666323 has 8 divisors (see below), whose sum is σ = 203587878336. Its totient is φ = 84828282600.

The previous prime is 139966666303. The next prime is 139966666327. The reversal of 139966666323 is 323666669931.

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

It is not a de Polignac number, because 139966666323 - 2¹⁴ = 139966649939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139966666327) 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, 2120707033 + ... + 2120707098.

It is an arithmetic number, because the mean of its divisors is an integer number (25448484792).

Almost surely, 2^139966666323 is an apocalyptic number.

139966666323 is a deficient number, since it is larger than the sum of its proper divisors (63621212013).

139966666323 is a wasteful number, since it uses less digits than its factorization.

139966666323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241414145.

The product of its digits is 34012224, while the sum is 60.

The spelling of 139966666323 in words is "one hundred thirty-nine billion, nine hundred sixty-six million, six hundred sixty-six thousand, three hundred twenty-three".