155840122195 has 8 divisors (see below), whose sum is σ = 187365717936. Its totient is φ = 124433716896.

The previous prime is 155840122171. The next prime is 155840122219. The reversal of 155840122195 is 591221048551.

It is an interprime number because it is at equal distance from previous prime (155840122171) and next prime (155840122219).

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

It is a cyclic number.

It is not a de Polignac number, because 155840122195 - 2³³ = 147250187603 is a prime.

It is a super-2 number, since 2×155840122195² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29794732 + ... + 29799961.

It is an arithmetic number, because the mean of its divisors is an integer number (23420714742).

Almost surely, 2^155840122195 is an apocalyptic number.

155840122195 is a deficient number, since it is larger than the sum of its proper divisors (31525595741).

155840122195 is an equidigital number, since it uses as much as digits as its factorization.

155840122195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59595221.

The product of its (nonzero) digits is 144000, while the sum is 43.

The spelling of 155840122195 in words is "one hundred fifty-five billion, eight hundred forty million, one hundred twenty-two thousand, one hundred ninety-five".