20091009290 has 32 divisors (see below), whose sum is σ = 39462002496. Its totient is φ = 7303864960.

The previous prime is 20091009251. The next prime is 20091009347. The reversal of 20091009290 is 9290019002.

It is a super-4 number, since 4×20091009290⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425609 + ... + 470451.

It is an arithmetic number, because the mean of its divisors is an integer number (1233187578).

Almost surely, 2^20091009290 is an apocalyptic number.

20091009290 is a deficient number, since it is larger than the sum of its proper divisors (19370993206).

20091009290 is a wasteful number, since it uses less digits than its factorization.

20091009290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48934.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 20091009290 in words is "twenty billion, ninety-one million, nine thousand, two hundred ninety".