16451376557161 has 16 divisors (see below), whose sum is σ = 20272814681728. Its totient is φ = 13000423795200.

The previous prime is 16451376557137. The next prime is 16451376557167. The reversal of 16451376557161 is 16175567315461.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16451376557161 - 2⁴³ = 7655283534953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16451376557096 and 16451376557105.

It is not an unprimeable number, because it can be changed into a prime (16451376557167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111383880 + ... + 111531481.

It is an arithmetic number, because the mean of its divisors is an integer number (1267050917608).

Almost surely, 2^{16451376557161} is an apocalyptic number.

It is an amenable number.

16451376557161 is a deficient number, since it is larger than the sum of its proper divisors (3821438124567).

16451376557161 is a wasteful number, since it uses less digits than its factorization.

16451376557161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222916192.

The product of its digits is 15876000, while the sum is 58.

The spelling of 16451376557161 in words is "sixteen trillion, four hundred fifty-one billion, three hundred seventy-six million, five hundred fifty-seven thousand, one hundred sixty-one".