155115302041540 has 24 divisors (see below), whose sum is σ = 325743075933912. Its totient is φ = 62045941455360.

The previous prime is 155115302041523. The next prime is 155115302041559. The reversal of 155115302041540 is 45140203511551.

It can be written as a sum of positive squares in 4 ways, for example, as 58664715264 + 155056637326276 = 242208^2 + 12452174^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155115302041540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4005621 + ... + 18063100.

It is an arithmetic number, because the mean of its divisors is an integer number (13572628163913).

Almost surely, 2^{155115302041540} is an apocalyptic number.

155115302041540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155115302041540 is an abundant number, since it is smaller than the sum of its proper divisors (170627773892372).

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

155115302041540 is a wasteful number, since it uses less digits than its factorization.

155115302041540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22420167 (or 22420165 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 37.

The spelling of 155115302041540 in words is "one hundred fifty-five trillion, one hundred fifteen billion, three hundred two million, forty-one thousand, five hundred forty".