101980783643 has 4 divisors (see below), whose sum is σ = 102883268568. Its totient is φ = 101078298720.

The previous prime is 101980783627. The next prime is 101980783651. The reversal of 101980783643 is 346387089101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101980783643 - 2⁴ = 101980783627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101980783591 and 101980783600.

It is not an unprimeable number, because it can be changed into a prime (101980783543) 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, 451242293 + ... + 451242518.

It is an arithmetic number, because the mean of its divisors is an integer number (25720817142).

Almost surely, 2^101980783643 is an apocalyptic number.

101980783643 is a deficient number, since it is larger than the sum of its proper divisors (902484925).

101980783643 is an equidigital number, since it uses as much as digits as its factorization.

101980783643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902484924.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 101980783643 in words is "one hundred one billion, nine hundred eighty million, seven hundred eighty-three thousand, six hundred forty-three".