155033853197 has 4 divisors (see below), whose sum is σ = 157575391836. Its totient is φ = 152492314560.

The previous prime is 155033853137. The next prime is 155033853229. The reversal of 155033853197 is 791358330551.

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

It can be written as a sum of positive squares in 2 ways, for example, as 74575963396 + 80457889801 = 273086^2 + 283651^2 .

It is a cyclic number.

It is not a de Polignac number, because 155033853197 - 2¹⁶ = 155033787661 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 (155033853137) 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, 1270769228 + ... + 1270769349.

It is an arithmetic number, because the mean of its divisors is an integer number (39393847959).

Almost surely, 2^155033853197 is an apocalyptic number.

It is an amenable number.

155033853197 is a deficient number, since it is larger than the sum of its proper divisors (2541538639).

155033853197 is an equidigital number, since it uses as much as digits as its factorization.

155033853197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541538638.

The product of its (nonzero) digits is 1701000, while the sum is 50.

The spelling of 155033853197 in words is "one hundred fifty-five billion, thirty-three million, eight hundred fifty-three thousand, one hundred ninety-seven".