155671385193 has 20 divisors (see below), whose sum is σ = 232841722960. Its totient is φ = 103649011992.

The previous prime is 155671385123. The next prime is 155671385201. The reversal of 155671385193 is 391583176551.

It is a happy number.

155671385193 is a `hidden beast` number, since 1 + 5 + 5 + 6 + 71 + 385 + 193 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-155671385193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155671385123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1157263 + ... + 1284756.

It is an arithmetic number, because the mean of its divisors is an integer number (11642086148).

Almost surely, 2^155671385193 is an apocalyptic number.

It is an amenable number.

155671385193 is a deficient number, since it is larger than the sum of its proper divisors (77170337767).

155671385193 is an equidigital number, since it uses as much as digits as its factorization.

155671385193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442818 (or 2442809 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 54.

The spelling of 155671385193 in words is "one hundred fifty-five billion, six hundred seventy-one million, three hundred eighty-five thousand, one hundred ninety-three".