155542112415 has 96 divisors (see below), whose sum is σ = 275130063936. Its totient is φ = 81278668800.

The previous prime is 155542112387. The next prime is 155542112483. The reversal of 155542112415 is 514211245551.

155542112415 is a `hidden beast` number, since 155 + 54 + 211 + 241 + 5 = 666.

It is not a de Polignac number, because 155542112415 - 2⁹ = 155542111903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155542112415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 264977752 + ... + 264978338.

It is an arithmetic number, because the mean of its divisors is an integer number (2865938166).

Almost surely, 2^155542112415 is an apocalyptic number.

155542112415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155542112415 is a deficient number, since it is larger than the sum of its proper divisors (119587951521).

155542112415 is a wasteful number, since it uses less digits than its factorization.

155542112415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1206 counting only the distinct ones).

The product of its digits is 40000, while the sum is 36.

Adding to 155542112415 its reverse (514211245551), we get a palindrome (669753357966).

The spelling of 155542112415 in words is "one hundred fifty-five billion, five hundred forty-two million, one hundred twelve thousand, four hundred fifteen".