909745680890 has 16 divisors (see below), whose sum is σ = 1638208208160. Its totient is φ = 363750276240.

The previous prime is 909745680869. The next prime is 909745680929. The reversal of 909745680890 is 98086547909.

It is a super-2 number, since 2×909745680890² (a number of 25 digits) contains 22 as substring.

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, 18473696 + ... + 18522875.

It is an arithmetic number, because the mean of its divisors is an integer number (102388013010).

Almost surely, 2^909745680890 is an apocalyptic number.

909745680890 is a deficient number, since it is larger than the sum of its proper divisors (728462527270).

909745680890 is a wasteful number, since it uses less digits than its factorization.

909745680890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36999037.

The product of its (nonzero) digits is 39191040, while the sum is 65.

The spelling of 909745680890 in words is "nine hundred nine billion, seven hundred forty-five million, six hundred eighty thousand, eight hundred ninety".