155243005504515 has 24 divisors (see below), whose sum is σ = 272111335498080. Its totient is φ = 81865974436224.

The previous prime is 155243005504513. The next prime is 155243005504529. The reversal of 155243005504515 is 515405500342551.

155243005504515 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 43 + 0 + 0 + 550 + 4 + 51 + 5 = 666.

It is not a de Polignac number, because 155243005504515 - 2¹ = 155243005504513 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (155243005504511) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19381145247 + ... + 19381153256.

It is an arithmetic number, because the mean of its divisors is an integer number (11337972312420).

Almost surely, 2^{155243005504515} is an apocalyptic number.

155243005504515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155243005504515 is a deficient number, since it is larger than the sum of its proper divisors (116868329993565).

155243005504515 is a wasteful number, since it uses less digits than its factorization.

155243005504515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38762298603 (or 38762298600 counting only the distinct ones).

The product of its (nonzero) digits is 1500000, while the sum is 45.

The spelling of 155243005504515 in words is "one hundred fifty-five trillion, two hundred forty-three billion, five million, five hundred four thousand, five hundred fifteen".