16251312604 has 12 divisors (see below), whose sum is σ = 28444415104. Its totient is φ = 8124336864.

The previous prime is 16251312587. The next prime is 16251312611. The reversal of 16251312604 is 40621315261.

It is a happy number.

It is a super-2 number, since 2×16251312604² (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, 301884 + ... + 351619.

Almost surely, 2^16251312604 is an apocalyptic number.

It is an amenable number.

16251312604 is a deficient number, since it is larger than the sum of its proper divisors (12193102500).

16251312604 is a wasteful number, since it uses less digits than its factorization.

16251312604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659724 (or 659722 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 16251312604 its reverse (40621315261), we get a palindrome (56872627865).

The spelling of 16251312604 in words is "sixteen billion, two hundred fifty-one million, three hundred twelve thousand, six hundred four".