16261321546 has 16 divisors (see below), whose sum is σ = 24453311904. Its totient is φ = 8110239984.

The previous prime is 16261321543. The next prime is 16261321547. The reversal of 16261321546 is 64512316261.

It is not an unprimeable number, because it can be changed into a prime (16261321543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793701 + ... + 1802743.

It is an arithmetic number, because the mean of its divisors is an integer number (1528331994).

Almost surely, 2^16261321546 is an apocalyptic number.

16261321546 is a deficient number, since it is larger than the sum of its proper divisors (8191990358).

16261321546 is a wasteful number, since it uses less digits than its factorization.

16261321546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11205.

The product of its digits is 51840, while the sum is 37.

The spelling of 16261321546 in words is "sixteen billion, two hundred sixty-one million, three hundred twenty-one thousand, five hundred forty-six".