206981940435 has 8 divisors (see below), whose sum is σ = 331171104720. Its totient is φ = 110390368224.

The previous prime is 206981940433. The next prime is 206981940491. The reversal of 206981940435 is 534049189602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206981940435 - 2¹ = 206981940433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206981940433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6899398000 + ... + 6899398029.

It is an arithmetic number, because the mean of its divisors is an integer number (41396388090).

Almost surely, 2^206981940435 is an apocalyptic number.

206981940435 is a deficient number, since it is larger than the sum of its proper divisors (124189164285).

206981940435 is a wasteful number, since it uses less digits than its factorization.

206981940435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13798796037.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 206981940435 in words is "two hundred six billion, nine hundred eighty-one million, nine hundred forty thousand, four hundred thirty-five".