140633886394 has 4 divisors (see below), whose sum is σ = 210950829594. Its totient is φ = 70316943196.

The previous prime is 140633886389. The next prime is 140633886451. The reversal of 140633886394 is 493688336041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493688336041 = 470359 ⋅1049599.

It can be written as a sum of positive squares in only one way, i.e., 120551312025 + 20082574369 = 347205^2 + 141713^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35158471597 + ... + 35158471600.

Almost surely, 2^140633886394 is an apocalyptic number.

140633886394 is a deficient number, since it is larger than the sum of its proper divisors (70316943200).

140633886394 is an equidigital number, since it uses as much as digits as its factorization.

140633886394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70316943199.

The product of its (nonzero) digits is 8957952, while the sum is 55.

The spelling of 140633886394 in words is "one hundred forty billion, six hundred thirty-three million, eight hundred eighty-six thousand, three hundred ninety-four".