206667361087656 has 64 divisors (see below), whose sum is σ = 590479328839680. Its totient is φ = 59047702023360.

The previous prime is 206667361087589. The next prime is 206667361087667. The reversal of 206667361087656 is 656780163766602.

It is a super-2 number, since 2×206667361087656² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123162565 + ... + 124829291.

It is an arithmetic number, because the mean of its divisors is an integer number (9226239513120).

Almost surely, 2^{206667361087656} is an apocalyptic number.

It is an amenable number.

206667361087656 is an abundant number, since it is smaller than the sum of its proper divisors (383811967752024).

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

206667361087656 is a wasteful number, since it uses less digits than its factorization.

206667361087656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404814 (or 2404810 counting only the distinct ones).

The product of its (nonzero) digits is 548674560, while the sum is 69.

The spelling of 206667361087656 in words is "two hundred six trillion, six hundred sixty-seven billion, three hundred sixty-one million, eighty-seven thousand, six hundred fifty-six".