20772609090 has 16 divisors (see below), whose sum is σ = 49854261888. Its totient is φ = 5539362416.

The previous prime is 20772609083. The next prime is 20772609103. The reversal of 20772609090 is 9090627702.

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, 346210122 + ... + 346210181.

It is an arithmetic number, because the mean of its divisors is an integer number (3115891368).

Almost surely, 2^20772609090 is an apocalyptic number.

20772609090 is an abundant number, since it is smaller than the sum of its proper divisors (29081652798).

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

20772609090 is a wasteful number, since it uses less digits than its factorization.

20772609090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692420313.

The product of its (nonzero) digits is 95256, while the sum is 42.

The spelling of 20772609090 in words is "twenty billion, seven hundred seventy-two million, six hundred nine thousand, ninety".