206837709494 has 16 divisors (see below), whose sum is σ = 334643732640. Its totient is φ = 95314621440.

The previous prime is 206837709473. The next prime is 206837709517. The reversal of 206837709494 is 494907738602.

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, 6188714 + ... + 6222045.

It is an arithmetic number, because the mean of its divisors is an integer number (20915233290).

Almost surely, 2^206837709494 is an apocalyptic number.

206837709494 is a deficient number, since it is larger than the sum of its proper divisors (127806023146).

206837709494 is a wasteful number, since it uses less digits than its factorization.

206837709494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12411415.

The product of its (nonzero) digits is 18289152, while the sum is 59.

The spelling of 206837709494 in words is "two hundred six billion, eight hundred thirty-seven million, seven hundred nine thousand, four hundred ninety-four".