16131504206 has 4 divisors (see below), whose sum is σ = 24197256312. Its totient is φ = 8065752102.

The previous prime is 16131504101. The next prime is 16131504209. The reversal of 16131504206 is 60240513161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16131504209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4032876050 + ... + 4032876053.

It is an arithmetic number, because the mean of its divisors is an integer number (6049314078).

Almost surely, 2^16131504206 is an apocalyptic number.

16131504206 is a deficient number, since it is larger than the sum of its proper divisors (8065752106).

16131504206 is an equidigital number, since it uses as much as digits as its factorization.

16131504206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065752105.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 16131504206 in words is "sixteen billion, one hundred thirty-one million, five hundred four thousand, two hundred six".