163377683440 has 20 divisors (see below), whose sum is σ = 379853114184. Its totient is φ = 65351073344.

The previous prime is 163377683437. The next prime is 163377683449. The reversal of 163377683440 is 44386773361.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163377683449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021110442 + ... + 1021110601.

Almost surely, 2^163377683440 is an apocalyptic number.

163377683440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163377683440 is an abundant number, since it is smaller than the sum of its proper divisors (216475430744).

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

163377683440 is a wasteful number, since it uses less digits than its factorization.

163377683440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042221056 (or 2042221050 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 52.

The spelling of 163377683440 in words is "one hundred sixty-three billion, three hundred seventy-seven million, six hundred eighty-three thousand, four hundred forty".