20807663001 has 4 divisors (see below), whose sum is σ = 27743550672. Its totient is φ = 13871775332.

The previous prime is 20807662999. The next prime is 20807663003. The reversal of 20807663001 is 10036670802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20807662999) and next prime (20807663003).

It is a cyclic number.

It is not a de Polignac number, because 20807663001 - 2¹ = 20807662999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20807663003) 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, 3467943831 + ... + 3467943836.

It is an arithmetic number, because the mean of its divisors is an integer number (6935887668).

Almost surely, 2^20807663001 is an apocalyptic number.

It is an amenable number.

20807663001 is a deficient number, since it is larger than the sum of its proper divisors (6935887671).

20807663001 is an equidigital number, since it uses as much as digits as its factorization.

20807663001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6935887670.

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 20807663001 in words is "twenty billion, eight hundred seven million, six hundred sixty-three thousand, one".