155115511140 has 192 divisors, whose sum is σ = 451518520320. Its totient is φ = 39767769600.

The previous prime is 155115511069. The next prime is 155115511163. The reversal of 155115511140 is 41115511551.

155115511140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 155115511098 and 155115511107.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 29673207 + ... + 29678433.

It is an arithmetic number, because the mean of its divisors is an integer number (2351658960).

Almost surely, 2^155115511140 is an apocalyptic number.

155115511140 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 155115511140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225759260160).

155115511140 is an abundant number, since it is smaller than the sum of its proper divisors (296403009180).

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

155115511140 is a wasteful number, since it uses less digits than its factorization.

155115511140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5482 (or 5480 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 30.

The spelling of 155115511140 in words is "one hundred fifty-five billion, one hundred fifteen million, five hundred eleven thousand, one hundred forty".