20486751999 has 16 divisors (see below), whose sum is σ = 31943907072. Its totient is φ = 11434465728.

The previous prime is 20486751997. The next prime is 20486752001. The reversal of 20486751999 is 99915768402.

It is an interprime number because it is at equal distance from previous prime (20486751997) and next prime (20486752001).

It is not a de Polignac number, because 20486751999 - 2¹ = 20486751997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20486751991) 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 15 ways as a sum of consecutive naturals, for example, 11342814 + ... + 11344619.

It is an arithmetic number, because the mean of its divisors is an integer number (1996494192).

Almost surely, 2^20486751999 is an apocalyptic number.

20486751999 is a deficient number, since it is larger than the sum of its proper divisors (11457155073).

20486751999 is a wasteful number, since it uses less digits than its factorization.

20486751999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22687486.

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 20486751999 in words is "twenty billion, four hundred eighty-six million, seven hundred fifty-one thousand, nine hundred ninety-nine".