206122650654 has 16 divisors (see below), whose sum is σ = 412588567440. Its totient is φ = 68650339200.

The previous prime is 206122650647. The next prime is 206122650733. The reversal of 206122650654 is 456056221602.

It is a super-2 number, since 2×206122650654² (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, 14294949 + ... + 14309360.

It is an arithmetic number, because the mean of its divisors is an integer number (25786785465).

Almost surely, 2^206122650654 is an apocalyptic number.

206122650654 is an abundant number, since it is smaller than the sum of its proper divisors (206465916786).

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

206122650654 is a wasteful number, since it uses less digits than its factorization.

206122650654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28605515.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 206122650654 in words is "two hundred six billion, one hundred twenty-two million, six hundred fifty thousand, six hundred fifty-four".