20663874151 has 4 divisors (see below), whose sum is σ = 20954914704. Its totient is φ = 20372833600.

The previous prime is 20663874149. The next prime is 20663874167. The reversal of 20663874151 is 15147836602.

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

It is a cyclic number.

It is not a de Polignac number, because 20663874151 - 2¹ = 20663874149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20663874098 and 20663874107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20663874551) 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, 145520170 + ... + 145520311.

It is an arithmetic number, because the mean of its divisors is an integer number (5238728676).

Almost surely, 2^20663874151 is an apocalyptic number.

20663874151 is a deficient number, since it is larger than the sum of its proper divisors (291040553).

20663874151 is an equidigital number, since it uses as much as digits as its factorization.

20663874151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291040552.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 20663874151 in words is "twenty billion, six hundred sixty-three million, eight hundred seventy-four thousand, one hundred fifty-one".