20091333966 has 16 divisors (see below), whose sum is σ = 43835637888. Its totient is φ = 6088283000.

The previous prime is 20091333937. The next prime is 20091333973. The reversal of 20091333966 is 66933319002.

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, 152207010 + ... + 152207141.

It is an arithmetic number, because the mean of its divisors is an integer number (2739727368).

Almost surely, 2^20091333966 is an apocalyptic number.

20091333966 is an abundant number, since it is smaller than the sum of its proper divisors (23744303922).

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

20091333966 is a wasteful number, since it uses less digits than its factorization.

20091333966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304414167.

The product of its (nonzero) digits is 157464, while the sum is 42.

The spelling of 20091333966 in words is "twenty billion, ninety-one million, three hundred thirty-three thousand, nine hundred sixty-six".