208656764134 has 128 divisors (see below), whose sum is σ = 416306822400. Its totient is φ = 76088623104.

The previous prime is 208656764131. The next prime is 208656764143. The reversal of 208656764134 is 431467656802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208656764131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 172016512 + ... + 172017724.

It is an arithmetic number, because the mean of its divisors is an integer number (3252397050).

Almost surely, 2^208656764134 is an apocalyptic number.

208656764134 is a deficient number, since it is larger than the sum of its proper divisors (207650058266).

208656764134 is a wasteful number, since it uses less digits than its factorization.

208656764134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354.

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 208656764134 in words is "two hundred eight billion, six hundred fifty-six million, seven hundred sixty-four thousand, one hundred thirty-four".