155953816198 has 12 divisors (see below), whose sum is σ = 248500804932. Its totient is φ = 73390030880.

The previous prime is 155953816177. The next prime is 155953816199. The reversal of 155953816198 is 891618359551.

It is a super-3 number, since 3×155953816198³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155953816199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134907568 + ... + 134908723.

It is an arithmetic number, because the mean of its divisors is an integer number (20708400411).

Almost surely, 2^155953816198 is an apocalyptic number.

155953816198 is a deficient number, since it is larger than the sum of its proper divisors (92546988734).

155953816198 is a wasteful number, since it uses less digits than its factorization.

155953816198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269816327 (or 269816310 counting only the distinct ones).

The product of its digits is 11664000, while the sum is 61.

The spelling of 155953816198 in words is "one hundred fifty-five billion, nine hundred fifty-three million, eight hundred sixteen thousand, one hundred ninety-eight".