866257416722634 has 48 divisors (see below), whose sum is σ = 1803084409738080. Its totient is φ = 277427531671200.

The previous prime is 866257416722627. The next prime is 866257416722653. The reversal of 866257416722634 is 436227614752668.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 539613697 + ... + 541216644.

It is an arithmetic number, because the mean of its divisors is an integer number (37564258536210).

Almost surely, 2^{866257416722634} is an apocalyptic number.

866257416722634 is an abundant number, since it is smaller than the sum of its proper divisors (936826993015446).

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

866257416722634 is a wasteful number, since it uses less digits than its factorization.

866257416722634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080830547 (or 1080830516 counting only the distinct ones).

The product of its digits is 975421440, while the sum is 69.

The spelling of 866257416722634 in words is "eight hundred sixty-six trillion, two hundred fifty-seven billion, four hundred sixteen million, seven hundred twenty-two thousand, six hundred thirty-four".