207961970646 has 32 divisors (see below), whose sum is σ = 430125954048. Its totient is φ = 66961833120.

The previous prime is 207961970627. The next prime is 207961970659. The reversal of 207961970646 is 646079169702.

It is a congruent number.

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, 920265 + ... + 1123748.

It is an arithmetic number, because the mean of its divisors is an integer number (13441436064).

Almost surely, 2^207961970646 is an apocalyptic number.

207961970646 is an abundant number, since it is smaller than the sum of its proper divisors (222163983402).

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

207961970646 is a wasteful number, since it uses less digits than its factorization.

207961970646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044596.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 207961970646 in words is "two hundred seven billion, nine hundred sixty-one million, nine hundred seventy thousand, six hundred forty-six".