20351463986 has 16 divisors (see below), whose sum is σ = 35214284736. Its totient is φ = 8640540816.

The previous prime is 20351463983. The next prime is 20351464033. The reversal of 20351463986 is 68936415302.

It is a self number, because there is not a number n which added to its sum of digits gives 20351463986.

It is not an unprimeable number, because it can be changed into a prime (20351463983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6791381 + ... + 6794376.

It is an arithmetic number, because the mean of its divisors is an integer number (2200892796).

Almost surely, 2^20351463986 is an apocalyptic number.

20351463986 is a deficient number, since it is larger than the sum of its proper divisors (14862820750).

20351463986 is a wasteful number, since it uses less digits than its factorization.

20351463986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13585873.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 20351463986 in words is "twenty billion, three hundred fifty-one million, four hundred sixty-three thousand, nine hundred eighty-six".