155512055015145 has 24 divisors (see below), whose sum is σ = 269554673728392. Its totient is φ = 82939625740800.

The previous prime is 155512055015113. The next prime is 155512055015167. The reversal of 155512055015145 is 541510550215551.

155512055015145 is a `hidden beast` number, since 1 + 5 + 5 + 5 + 1 + 2 + 0 + 550 + 1 + 51 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 89393299768809 + 66118755246336 = 9454803^2 + 8131344^2 .

It is not a de Polignac number, because 155512055015145 - 2⁵ = 155512055015113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 155512055015145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28490385 + ... + 33507105.

It is an arithmetic number, because the mean of its divisors is an integer number (11231444738683).

Almost surely, 2^{155512055015145} is an apocalyptic number.

155512055015145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155512055015145 is a deficient number, since it is larger than the sum of its proper divisors (114042618713247).

155512055015145 is a wasteful number, since it uses less digits than its factorization.

155512055015145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5705593 (or 5705590 counting only the distinct ones).

The product of its (nonzero) digits is 625000, while the sum is 45.

The spelling of 155512055015145 in words is "one hundred fifty-five trillion, five hundred twelve billion, fifty-five million, fifteen thousand, one hundred forty-five".