11985554925770 has 64 divisors (see below), whose sum is σ = 21781379727360. Its totient is φ = 4748383905600.

The previous prime is 11985554925749. The next prime is 11985554925899. The reversal of 11985554925770 is 7752945558911.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11985554925770.

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, 712950665 + ... + 712967475.

It is an arithmetic number, because the mean of its divisors is an integer number (340334058240).

Almost surely, 2^{11985554925770} is an apocalyptic number.

11985554925770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11985554925770 is a deficient number, since it is larger than the sum of its proper divisors (9795824801590).

11985554925770 is a wasteful number, since it uses less digits than its factorization.

11985554925770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18611.

The product of its (nonzero) digits is 158760000, while the sum is 68.

The spelling of 11985554925770 in words is "eleven trillion, nine hundred eighty-five billion, five hundred fifty-four million, nine hundred twenty-five thousand, seven hundred seventy".