20274563986 has 16 divisors (see below), whose sum is σ = 31739408064. Its totient is φ = 9694908784.

The previous prime is 20274563977. The next prime is 20274563989. The reversal of 20274563986 is 68936547202.

It is a super-2 number, since 2×20274563986² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20274563989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268320 + ... + 335476.

It is an arithmetic number, because the mean of its divisors is an integer number (1983713004).

Almost surely, 2^20274563986 is an apocalyptic number.

20274563986 is a deficient number, since it is larger than the sum of its proper divisors (11464844078).

20274563986 is a wasteful number, since it uses less digits than its factorization.

20274563986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73745.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 20274563986 in words is "twenty billion, two hundred seventy-four million, five hundred sixty-three thousand, nine hundred eighty-six".