20466387886 has 16 divisors (see below), whose sum is σ = 35747223264. Its totient is φ = 8605812384.

The previous prime is 20466387869. The next prime is 20466387899. The reversal of 20466387886 is 68878366402.

It is a self number, because there is not a number n which added to its sum of digits gives 20466387886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13790625 + ... + 13792108.

It is an arithmetic number, because the mean of its divisors is an integer number (2234201454).

Almost surely, 2^20466387886 is an apocalyptic number.

20466387886 is a deficient number, since it is larger than the sum of its proper divisors (15280835378).

20466387886 is a wasteful number, since it uses less digits than its factorization.

20466387886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27582795.

The product of its (nonzero) digits is 18579456, while the sum is 58.

The spelling of 20466387886 in words is "twenty billion, four hundred sixty-six million, three hundred eighty-seven thousand, eight hundred eighty-six".