20060863657 has 4 divisors (see below), whose sum is σ = 20314798720. Its totient is φ = 19806928596.

The previous prime is 20060863639. The next prime is 20060863663. The reversal of 20060863657 is 75636806002.

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 a cyclic number.

It is not a de Polignac number, because 20060863657 - 2²⁷ = 19926645929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20060863607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126967413 + ... + 126967570.

It is an arithmetic number, because the mean of its divisors is an integer number (5078699680).

Almost surely, 2^20060863657 is an apocalyptic number.

It is an amenable number.

20060863657 is a deficient number, since it is larger than the sum of its proper divisors (253935063).

20060863657 is an equidigital number, since it uses as much as digits as its factorization.

20060863657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253935062.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 20060863657 in words is "twenty billion, sixty million, eight hundred sixty-three thousand, six hundred fifty-seven".