155415143252205 has 48 divisors (see below), whose sum is σ = 283565825449920. Its totient is φ = 78525171235584.

The previous prime is 155415143252197. The next prime is 155415143252209. The reversal of 155415143252205 is 502252341514551.

155415143252205 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 1 + 5 + 1 + 432 + 5 + 2 + 205 = 666.

It is not a de Polignac number, because 155415143252205 - 2³ = 155415143252197 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155415143252209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 302073537 + ... + 302587593.

It is an arithmetic number, because the mean of its divisors is an integer number (5907621363540).

Almost surely, 2^{155415143252205} is an apocalyptic number.

155415143252205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155415143252205 is a deficient number, since it is larger than the sum of its proper divisors (128150682197715).

155415143252205 is a wasteful number, since it uses less digits than its factorization.

155415143252205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867690 (or 867687 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 45.

Adding to 155415143252205 its reverse (502252341514551), we get a palindrome (657667484766756).

The spelling of 155415143252205 in words is "one hundred fifty-five trillion, four hundred fifteen billion, one hundred forty-three million, two hundred fifty-two thousand, two hundred five".