16365650161258 has 4 divisors (see below), whose sum is σ = 24548475241890. Its totient is φ = 8182825080628.

The previous prime is 16365650161163. The next prime is 16365650161271. The reversal of 16365650161258 is 85216105656361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12400067805129 + 3965582356129 = 3521373^2 + 1991377^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 16365650161199 and 16365650161208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4091412540313 + ... + 4091412540316.

Almost surely, 2^{16365650161258} is an apocalyptic number.

16365650161258 is a deficient number, since it is larger than the sum of its proper divisors (8182825080632).

16365650161258 is an equidigital number, since it uses as much as digits as its factorization.

16365650161258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182825080631.

The product of its (nonzero) digits is 7776000, while the sum is 55.

The spelling of 16365650161258 in words is "sixteen trillion, three hundred sixty-five billion, six hundred fifty million, one hundred sixty-one thousand, two hundred fifty-eight".