16125097681 has 8 divisors (see below), whose sum is σ = 20104017984. Its totient is φ = 12565011120.

The previous prime is 16125097663. The next prime is 16125097693. The reversal of 16125097681 is 18679052161.

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

It is a cyclic number.

It is not a de Polignac number, because 16125097681 - 2⁷ = 16125097553 is a prime.

It is a super-2 number, since 2×16125097681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16125097181) 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, 104708350 + ... + 104708503.

It is an arithmetic number, because the mean of its divisors is an integer number (2513002248).

Almost surely, 2^16125097681 is an apocalyptic number.

16125097681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16125097681 is a deficient number, since it is larger than the sum of its proper divisors (3978920303).

16125097681 is a wasteful number, since it uses less digits than its factorization.

16125097681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209416871.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 16125097681 in words is "sixteen billion, one hundred twenty-five million, ninety-seven thousand, six hundred eighty-one".