155840122194 has 8 divisors (see below), whose sum is σ = 311680244400. Its totient is φ = 51946707396.

The previous prime is 155840122171. The next prime is 155840122219. The reversal of 155840122194 is 491221048551.

It is a sphenic number, since it is the product of 3 distinct primes.

155840122194 is an admirable number.

It is a super-2 number, since 2×155840122194² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12986676844 + ... + 12986676855.

It is an arithmetic number, because the mean of its divisors is an integer number (38960030550).

Almost surely, 2^155840122194 is an apocalyptic number.

155840122194 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155840122194 is a wasteful number, since it uses less digits than its factorization.

155840122194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25973353704.

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 155840122194 in words is "one hundred fifty-five billion, eight hundred forty million, one hundred twenty-two thousand, one hundred ninety-four".