155173873857542 has 8 divisors (see below), whose sum is σ = 232760886766032. Its totient is φ = 77586911602200.

The previous prime is 155173873857463. The next prime is 155173873857547. The reversal of 155173873857542 is 245758378371551.

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

It is a super-2 number, since 2×155173873857542² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155173873857547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3749834 + ... + 18011357.

It is an arithmetic number, because the mean of its divisors is an integer number (29095110845754).

Almost surely, 2^{155173873857542} is an apocalyptic number.

155173873857542 is a deficient number, since it is larger than the sum of its proper divisors (77587012908490).

155173873857542 is a wasteful number, since it uses less digits than its factorization.

155173873857542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25326574.

The product of its digits is 987840000, while the sum is 71.

The spelling of 155173873857542 in words is "one hundred fifty-five trillion, one hundred seventy-three billion, eight hundred seventy-three million, eight hundred fifty-seven thousand, five hundred forty-two".