49966666994 has 4 divisors (see below), whose sum is σ = 74950000494. Its totient is φ = 24983333496.

The previous prime is 49966666979. The next prime is 49966667017.

It is a happy number.

49966666994 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30210958969 + 19755708025 = 173813^2 + 140555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12491666747 + ... + 12491666750.

Almost surely, 2^49966666994 is an apocalyptic number.

49966666994 is a deficient number, since it is larger than the sum of its proper divisors (24983333500).

49966666994 is a wasteful number, since it uses less digits than its factorization.

49966666994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24983333499.

The product of its digits is 816293376, while the sum is 74.

The spelling of 49966666994 in words is "forty-nine billion, nine hundred sixty-six million, six hundred sixty-six thousand, nine hundred ninety-four".