155133694193 has 4 divisors (see below), whose sum is σ = 155210838768. Its totient is φ = 155056549620.

The previous prime is 155133694171. The next prime is 155133694223. The reversal of 155133694193 is 391496331551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155133694193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155133694153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38569271 + ... + 38573292.

It is an arithmetic number, because the mean of its divisors is an integer number (38802709692).

Almost surely, 2^155133694193 is an apocalyptic number.

It is an amenable number.

155133694193 is a deficient number, since it is larger than the sum of its proper divisors (77144575).

155133694193 is an equidigital number, since it uses as much as digits as its factorization.

155133694193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77144574.

The product of its digits is 1312200, while the sum is 50.

The spelling of 155133694193 in words is "one hundred fifty-five billion, one hundred thirty-three million, six hundred ninety-four thousand, one hundred ninety-three".