205920769039 has 8 divisors (see below), whose sum is σ = 206050104320. Its totient is φ = 205791478200.

The previous prime is 205920769031. The next prime is 205920769049. The reversal of 205920769039 is 930967029502.

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

It is a cyclic number.

It is not a de Polignac number, because 205920769039 - 2³ = 205920769031 is a prime.

It is a super-2 number, since 2×205920769039² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205920769031) 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, 14627374 + ... + 14641444.

It is an arithmetic number, because the mean of its divisors is an integer number (25756263040).

Almost surely, 2^205920769039 is an apocalyptic number.

205920769039 is a deficient number, since it is larger than the sum of its proper divisors (129335281).

205920769039 is a wasteful number, since it uses less digits than its factorization.

205920769039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22221.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The spelling of 205920769039 in words is "two hundred five billion, nine hundred twenty million, seven hundred sixty-nine thousand, thirty-nine".