155933161132197 has 4 divisors (see below), whose sum is σ = 207910881509600. Its totient is φ = 103955440754796.

The previous prime is 155933161132169. The next prime is 155933161132211. The reversal of 155933161132197 is 791231161339551.

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 de Polignac number, because none of the positive numbers 2^k-155933161132197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155933161132117) 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, 25988860188697 + ... + 25988860188702.

It is an arithmetic number, because the mean of its divisors is an integer number (51977720377400).

Almost surely, 2^{155933161132197} is an apocalyptic number.

It is an amenable number.

155933161132197 is a deficient number, since it is larger than the sum of its proper divisors (51977720377403).

155933161132197 is an equidigital number, since it uses as much as digits as its factorization.

155933161132197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51977720377402.

The product of its digits is 4592700, while the sum is 57.

The spelling of 155933161132197 in words is "one hundred fifty-five trillion, nine hundred thirty-three billion, one hundred sixty-one million, one hundred thirty-two thousand, one hundred ninety-seven".