11685238890 has 64 divisors (see below), whose sum is σ = 31176133632. Its totient is φ = 2783577600.

The previous prime is 11685238883. The next prime is 11685238927. The reversal of 11685238890 is 9883258611.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 471171 + ... + 495350.

It is an arithmetic number, because the mean of its divisors is an integer number (487127088).

Almost surely, 2^11685238890 is an apocalyptic number.

11685238890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11685238890 is an abundant number, since it is smaller than the sum of its proper divisors (19490894742).

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

11685238890 is a wasteful number, since it uses less digits than its factorization.

11685238890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966575.

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 11685238890 in words is "eleven billion, six hundred eighty-five million, two hundred thirty-eight thousand, eight hundred ninety".