868220088872 has 8 divisors (see below), whose sum is σ = 1627912666650. Its totient is φ = 434110044432.

The previous prime is 868220088829. The next prime is 868220088899. The reversal of 868220088872 is 278880022868.

It can be written as a sum of positive squares in only one way, i.e., 691781446756 + 176438642116 = 831734^2 + 420046^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×868220088872² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54263755547 + ... + 54263755562.

Almost surely, 2^868220088872 is an apocalyptic number.

It is an amenable number.

868220088872 is a deficient number, since it is larger than the sum of its proper divisors (759692577778).

868220088872 is a wasteful number, since it uses less digits than its factorization.

868220088872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108527511115 (or 108527511111 counting only the distinct ones).

The product of its (nonzero) digits is 11010048, while the sum is 59.

The spelling of 868220088872 in words is "eight hundred sixty-eight billion, two hundred twenty million, eighty-eight thousand, eight hundred seventy-two".