155411540442405 has 96 divisors (see below), whose sum is σ = 300111315154560. Its totient is φ = 73870466987520.

The previous prime is 155411540442343. The next prime is 155411540442409. The reversal of 155411540442405 is 504244045114551.

155411540442405 is a `hidden beast` number, since 1 + 5 + 5 + 41 + 1 + 540 + 44 + 24 + 0 + 5 = 666.

It is not a de Polignac number, because 155411540442405 - 2⁹ = 155411540441893 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 (155411540442409) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 1603669962 + ... + 1603766868.

It is an arithmetic number, because the mean of its divisors is an integer number (3126159532860).

Almost surely, 2^{155411540442405} is an apocalyptic number.

155411540442405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155411540442405 is a deficient number, since it is larger than the sum of its proper divisors (144699774712155).

155411540442405 is a wasteful number, since it uses less digits than its factorization.

155411540442405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191491 (or 191488 counting only the distinct ones).

The product of its (nonzero) digits is 1280000, while the sum is 45.

Adding to 155411540442405 its reverse (504244045114551), we get a palindrome (659655585556956).

The spelling of 155411540442405 in words is "one hundred fifty-five trillion, four hundred eleven billion, five hundred forty million, four hundred forty-two thousand, four hundred five".