16686258157261 has 32 divisors (see below), whose sum is σ = 20852235360000. Its totient is φ = 12971930042880.

The previous prime is 16686258157213. The next prime is 16686258157321. The reversal of 16686258157261 is 16275185268661.

It is a cyclic number.

It is not a de Polignac number, because 16686258157261 - 2⁹ = 16686258156749 is a prime.

It is a super-2 number, since 2×16686258157261² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16686258157193 and 16686258157202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16686258157061) 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, 107664121 + ... + 107818993.

It is an arithmetic number, because the mean of its divisors is an integer number (651632355000).

Almost surely, 2^{16686258157261} is an apocalyptic number.

16686258157261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16686258157261 is a deficient number, since it is larger than the sum of its proper divisors (4165977202739).

16686258157261 is a wasteful number, since it uses less digits than its factorization.

16686258157261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158149.

The product of its digits is 58060800, while the sum is 64.

The spelling of 16686258157261 in words is "sixteen trillion, six hundred eighty-six billion, two hundred fifty-eight million, one hundred fifty-seven thousand, two hundred sixty-one".