206721441741 has 16 divisors (see below), whose sum is σ = 283137340928. Its totient is φ = 134061480000.

The previous prime is 206721441713. The next prime is 206721441743. The reversal of 206721441741 is 147144127602.

It is a happy number.

It is not a de Polignac number, because 206721441741 - 2⁶ = 206721441677 is a prime.

It is a super-2 number, since 2×206721441741² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206721441741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206721441743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343491 + ... + 728991.

It is an arithmetic number, because the mean of its divisors is an integer number (17696083808).

Almost surely, 2^206721441741 is an apocalyptic number.

It is an amenable number.

206721441741 is a deficient number, since it is larger than the sum of its proper divisors (76415899187).

206721441741 is a wasteful number, since it uses less digits than its factorization.

206721441741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390372.

The product of its (nonzero) digits is 75264, while the sum is 39.

The spelling of 206721441741 in words is "two hundred six billion, seven hundred twenty-one million, four hundred forty-one thousand, seven hundred forty-one".