16366536251201 has 4 divisors (see below), whose sum is σ = 16398690546900. Its totient is φ = 16334381955504.

The previous prime is 16366536251173. The next prime is 16366536251239. The reversal of 16366536251201 is 10215263566361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9002694201601 + 7363842049600 = 3000449^2 + 2713640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16366536251201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16366536251101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16077147086 + ... + 16077148103.

It is an arithmetic number, because the mean of its divisors is an integer number (4099672636725).

Almost surely, 2^{16366536251201} is an apocalyptic number.

It is an amenable number.

16366536251201 is a deficient number, since it is larger than the sum of its proper divisors (32154295699).

16366536251201 is an equidigital number, since it uses as much as digits as its factorization.

16366536251201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32154295698.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 16366536251201 in words is "sixteen trillion, three hundred sixty-six billion, five hundred thirty-six million, two hundred fifty-one thousand, two hundred one".