15800011000001 has 4 divisors (see below), whose sum is σ = 15800241158100. Its totient is φ = 15799780841904.

The previous prime is 15800010999989. The next prime is 15800011000003. The reversal of 15800011000001 is 10000011000851.

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 9765618750001 + 6034392250000 = 3124999^2 + 2456500^2 .

It is a cyclic number.

It is not a de Polignac number, because 15800011000001 - 2⁴² = 11401964488897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15800011000003) 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, 114976046 + ... + 115113383.

It is an arithmetic number, because the mean of its divisors is an integer number (3950060289525).

Almost surely, 2^{15800011000001} is an apocalyptic number.

It is an amenable number.

15800011000001 is a deficient number, since it is larger than the sum of its proper divisors (230158099).

15800011000001 is an equidigital number, since it uses as much as digits as its factorization.

15800011000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230158098.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 15800011000001 its reverse (10000011000851), we get a palindrome (25800022000852).

The spelling of 15800011000001 in words is "fifteen trillion, eight hundred billion, eleven million, one", and thus it is an aban number.