20270701866 has 16 divisors (see below), whose sum is σ = 40580064000. Its totient is φ = 6750457248.

The previous prime is 20270701811. The next prime is 20270701889. The reversal of 20270701866 is 66810707202.

It is an unprimeable number.

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, 1604026 + ... + 1616613.

It is an arithmetic number, because the mean of its divisors is an integer number (2536254000).

Almost surely, 2^20270701866 is an apocalyptic number.

20270701866 is an abundant number, since it is smaller than the sum of its proper divisors (20309362134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20270701866 is a wasteful number, since it uses less digits than its factorization.

20270701866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221693.

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 20270701866 in words is "twenty billion, two hundred seventy million, seven hundred one thousand, eight hundred sixty-six".