16681071801 has 8 divisors (see below), whose sum is σ = 22247569024. Its totient is φ = 11117644560.

The previous prime is 16681071739. The next prime is 16681071863. The reversal of 16681071801 is 10817018661.

It is an interprime number because it is at equal distance from previous prime (16681071739) and next prime (16681071863).

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

It is not a de Polignac number, because 16681071801 - 2⁹ = 16681071289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16681071801.

It is not an unprimeable number, because it can be changed into a prime (16681071871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754786 + ... + 776571.

It is an arithmetic number, because the mean of its divisors is an integer number (2780946128).

Almost surely, 2^16681071801 is an apocalyptic number.

It is an amenable number.

16681071801 is a deficient number, since it is larger than the sum of its proper divisors (5566497223).

16681071801 is a wasteful number, since it uses less digits than its factorization.

16681071801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534991.

The product of its (nonzero) digits is 16128, while the sum is 39.

The spelling of 16681071801 in words is "sixteen billion, six hundred eighty-one million, seventy-one thousand, eight hundred one".