155540531140 has 48 divisors (see below), whose sum is σ = 328935265344. Its totient is φ = 61778620800.

The previous prime is 155540531137. The next prime is 155540531183. The reversal of 155540531140 is 41135045551.

It is a junction number, because it is equal to n+sod(n) for n = 155540531096 and 155540531105.

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 15 ways as a sum of consecutive naturals, for example, 4917175 + ... + 4948705.

It is an arithmetic number, because the mean of its divisors is an integer number (6852818028).

Almost surely, 2^155540531140 is an apocalyptic number.

155540531140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155540531140 is an abundant number, since it is smaller than the sum of its proper divisors (173394734204).

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

155540531140 is a wasteful number, since it uses less digits than its factorization.

155540531140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33268 (or 33266 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 155540531140 its reverse (41135045551), we get a palindrome (196675576691).

The spelling of 155540531140 in words is "one hundred fifty-five billion, five hundred forty million, five hundred thirty-one thousand, one hundred forty".