15541346831055 has 32 divisors (see below), whose sum is σ = 27473603410944. Its totient is φ = 7461966352896.

The previous prime is 15541346831047. The next prime is 15541346831077. The reversal of 15541346831055 is 55013864314551.

It is not a de Polignac number, because 15541346831055 - 2³ = 15541346831047 is a prime.

It is a super-2 number, since 2×15541346831055² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 15541346830989 and 15541346831007.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1324917139 + ... + 1324928868.

It is an arithmetic number, because the mean of its divisors is an integer number (858550106592).

Almost surely, 2^{15541346831055} is an apocalyptic number.

15541346831055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15541346831055 is a deficient number, since it is larger than the sum of its proper divisors (11932256579889).

15541346831055 is a wasteful number, since it uses less digits than its factorization.

15541346831055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2649846055.

The product of its (nonzero) digits is 4320000, while the sum is 51.

The spelling of 15541346831055 in words is "fifteen trillion, five hundred forty-one billion, three hundred forty-six million, eight hundred thirty-one thousand, fifty-five".