133697248394 has 4 divisors (see below), whose sum is σ = 200545872594. Its totient is φ = 66848624196.

The previous prime is 133697248387. The next prime is 133697248417. The reversal of 133697248394 is 493842796331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 493842796331 = 167 ⋅2957142493.

It can be written as a sum of positive squares in only one way, i.e., 100650735025 + 33046513369 = 317255^2 + 181787^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33424312097 + ... + 33424312100.

Almost surely, 2^133697248394 is an apocalyptic number.

133697248394 is a deficient number, since it is larger than the sum of its proper divisors (66848624200).

133697248394 is an equidigital number, since it uses as much as digits as its factorization.

133697248394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66848624199.

The product of its digits is 23514624, while the sum is 59.

The spelling of 133697248394 in words is "one hundred thirty-three billion, six hundred ninety-seven million, two hundred forty-eight thousand, three hundred ninety-four".