16500081451 has 32 divisors (see below), whose sum is σ = 19537330176. Its totient is φ = 13641696000.

The previous prime is 16500081383. The next prime is 16500081463. The reversal of 16500081451 is 15418000561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16500081451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16500081751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9921046 + ... + 9922708.

It is an arithmetic number, because the mean of its divisors is an integer number (610541568).

Almost surely, 2^16500081451 is an apocalyptic number.

16500081451 is a deficient number, since it is larger than the sum of its proper divisors (3037248725).

16500081451 is a wasteful number, since it uses less digits than its factorization.

16500081451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083.

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 16500081451 in words is "sixteen billion, five hundred million, eighty-one thousand, four hundred fifty-one".