155155142703100 has 144 divisors (see below), whose sum is σ = 358110469338048. Its totient is φ = 58218175375360.

The previous prime is 155155142703037. The next prime is 155155142703101. The reversal of 155155142703100 is 1307241551551.

It is a super-2 number, since 2×155155142703100² (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 (155155142703101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 279727242 + ... + 280281358.

It is an arithmetic number, because the mean of its divisors is an integer number (2486878259292).

Almost surely, 2^{155155142703100} is an apocalyptic number.

155155142703100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155155142703100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179055234669024).

155155142703100 is an abundant number, since it is smaller than the sum of its proper divisors (202955326634948).

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

155155142703100 is a wasteful number, since it uses less digits than its factorization.

155155142703100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556504 (or 556497 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 40.

The spelling of 155155142703100 in words is "one hundred fifty-five trillion, one hundred fifty-five billion, one hundred forty-two million, seven hundred three thousand, one hundred".