10111717851820 has 48 divisors (see below), whose sum is σ = 24213217599648. Its totient is φ = 3513936337920.

The previous prime is 10111717851817. The next prime is 10111717851881. The reversal of 10111717851820 is 2815871711101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1143855066 + ... + 1143863905.

It is an arithmetic number, because the mean of its divisors is an integer number (504442033326).

Almost surely, 2^{10111717851820} is an apocalyptic number.

10111717851820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111717851820 is an abundant number, since it is smaller than the sum of its proper divisors (14101499747828).

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

10111717851820 is a wasteful number, since it uses less digits than its factorization.

10111717851820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287719010 (or 2287719008 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 43.

The spelling of 10111717851820 in words is "ten trillion, one hundred eleven billion, seven hundred seventeen million, eight hundred fifty-one thousand, eight hundred twenty".