15841134945 has 24 divisors (see below), whose sum is σ = 28127677032. Its totient is φ = 8242540800.

The previous prime is 15841134937. The next prime is 15841134961. The reversal of 15841134945 is 54943114851.

15841134945 is a `hidden beast` number, since 158 + 4 + 1 + 1 + 3 + 494 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 880664976 + 14960469969 = 29676^2 + 122313^2 .

It is not a de Polignac number, because 15841134945 - 2³ = 15841134937 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 15841134945.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4291146 + ... + 4294835.

It is an arithmetic number, because the mean of its divisors is an integer number (1171986543).

Almost surely, 2^15841134945 is an apocalyptic number.

15841134945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15841134945 is a deficient number, since it is larger than the sum of its proper divisors (12286542087).

15841134945 is a wasteful number, since it uses less digits than its factorization.

15841134945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8586033 (or 8586030 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The spelling of 15841134945 in words is "fifteen billion, eight hundred forty-one million, one hundred thirty-four thousand, nine hundred forty-five".