16261431206 has 8 divisors (see below), whose sum is σ = 24911128800. Its totient is φ = 7957721608.

The previous prime is 16261431149. The next prime is 16261431211. The reversal of 16261431206 is 60213416261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16261431206² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 86496881 + ... + 86497068.

It is an arithmetic number, because the mean of its divisors is an integer number (3113891100).

Almost surely, 2^16261431206 is an apocalyptic number.

16261431206 is a deficient number, since it is larger than the sum of its proper divisors (8649697594).

16261431206 is a wasteful number, since it uses less digits than its factorization.

16261431206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172993998.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 16261431206 its reverse (60213416261), we get a palindrome (76474847467).

The spelling of 16261431206 in words is "sixteen billion, two hundred sixty-one million, four hundred thirty-one thousand, two hundred six".