206261657022 has 16 divisors (see below), whose sum is σ = 413552055312. Its totient is φ = 68582428800.

The previous prime is 206261656973. The next prime is 206261657083. The reversal of 206261657022 is 220756162602.

It is a super-2 number, since 2×206261657022² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42861613 + ... + 42866424.

It is an arithmetic number, because the mean of its divisors is an integer number (25847003457).

Almost surely, 2^206261657022 is an apocalyptic number.

206261657022 is an abundant number, since it is smaller than the sum of its proper divisors (207290398290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206261657022 is a wasteful number, since it uses less digits than its factorization.

206261657022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85728443.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 206261657022 in words is "two hundred six billion, two hundred sixty-one million, six hundred fifty-seven thousand, twenty-two".