235166643440 has 80 divisors (see below), whose sum is σ = 586398852000. Its totient is φ = 87434320896.

The previous prime is 235166643419. The next prime is 235166643469. The reversal of 235166643440 is 44346661532.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 235166643391 and 235166643400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1379015 + ... + 1540134.

It is an arithmetic number, because the mean of its divisors is an integer number (7329985650).

Almost surely, 2^235166643440 is an apocalyptic number.

235166643440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

235166643440 is an abundant number, since it is smaller than the sum of its proper divisors (351232208560).

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

235166643440 is a wasteful number, since it uses less digits than its factorization.

235166643440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919234 (or 2919228 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 235166643440 in words is "two hundred thirty-five billion, one hundred sixty-six million, six hundred forty-three thousand, four hundred forty".