155440312134194 has 16 divisors (see below), whose sum is σ = 233336669823936. Its totient is φ = 77661443758800.

The previous prime is 155440312134181. The next prime is 155440312134199. The reversal of 155440312134194 is 491431213044551.

It is not an unprimeable number, because it can be changed into a prime (155440312134199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9033899 + ... + 19811409.

It is an arithmetic number, because the mean of its divisors is an integer number (14583541863996).

Almost surely, 2^{155440312134194} is an apocalyptic number.

155440312134194 is a deficient number, since it is larger than the sum of its proper divisors (77896357689742).

155440312134194 is a wasteful number, since it uses less digits than its factorization.

155440312134194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10782961.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 155440312134194 in words is "one hundred fifty-five trillion, four hundred forty billion, three hundred twelve million, one hundred thirty-four thousand, one hundred ninety-four".