981780893043 has 4 divisors (see below), whose sum is σ = 1309041190728. Its totient is φ = 654520595360.

The previous prime is 981780892993. The next prime is 981780893111. The reversal of 981780893043 is 340398087189.

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 981780893043 - 2¹⁶ = 981780827507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (981780893243) 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, 163630148838 + ... + 163630148843.

It is an arithmetic number, because the mean of its divisors is an integer number (327260297682).

Almost surely, 2^981780893043 is an apocalyptic number.

981780893043 is a deficient number, since it is larger than the sum of its proper divisors (327260297685).

981780893043 is a wasteful number, since it uses less digits than its factorization.

981780893043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327260297684.

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 981780893043 in words is "nine hundred eighty-one billion, seven hundred eighty million, eight hundred ninety-three thousand, forty-three".