20809089962 has 8 divisors (see below), whose sum is σ = 31222586592. Its totient is φ = 10401561100.

The previous prime is 20809089949. The next prime is 20809090009. The reversal of 20809089962 is 26998090802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20809089962² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483214 + ... + 1497177.

It is an arithmetic number, because the mean of its divisors is an integer number (3902823324).

Almost surely, 2^20809089962 is an apocalyptic number.

20809089962 is a deficient number, since it is larger than the sum of its proper divisors (10413496630).

20809089962 is a wasteful number, since it uses less digits than its factorization.

20809089962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983884.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 20809089962 in words is "twenty billion, eight hundred nine million, eighty-nine thousand, nine hundred sixty-two".