201783142680 has 192 divisors, whose sum is σ = 705157734240. Its totient is φ = 46057955328.

The previous prime is 201783142669. The next prime is 201783142697. The reversal of 201783142680 is 86241387102.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4286632 + ... + 4333448.

Almost surely, 2^201783142680 is an apocalyptic number.

201783142680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201783142680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352578867120).

201783142680 is an abundant number, since it is smaller than the sum of its proper divisors (503374591560).

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

201783142680 is a wasteful number, since it uses less digits than its factorization.

201783142680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47578 (or 47567 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 201783142680 in words is "two hundred one billion, seven hundred eighty-three million, one hundred forty-two thousand, six hundred eighty".