66112919950 has 96 divisors (see below), whose sum is σ = 154720811520. Its totient is φ = 20417443200.

The previous prime is 66112919923. The next prime is 66112919953. The reversal of 66112919950 is 5991921166.

66112919950 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66112919894 and 66112919903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66112919953) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 340879 + ... + 498421.

It is an arithmetic number, because the mean of its divisors is an integer number (1611675120).

Almost surely, 2^66112919950 is an apocalyptic number.

66112919950 is an abundant number, since it is smaller than the sum of its proper divisors (88607891570).

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

66112919950 is a wasteful number, since it uses less digits than its factorization.

66112919950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157682 (or 157677 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 49.

The spelling of 66112919950 in words is "sixty-six billion, one hundred twelve million, nine hundred nineteen thousand, nine hundred fifty".