867864145236 has 48 divisors (see below), whose sum is σ = 2209180962240. Its totient is φ = 262980536320.

The previous prime is 867864145219. The next prime is 867864145277. The reversal of 867864145236 is 632541468768.

It is a happy number.

867864145236 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 867864145236.

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, 4785610 + ... + 4963646.

It is an arithmetic number, because the mean of its divisors is an integer number (46024603380).

Almost surely, 2^867864145236 is an apocalyptic number.

It is an amenable number.

867864145236 is an abundant number, since it is smaller than the sum of its proper divisors (1341316817004).

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

867864145236 is a wasteful number, since it uses less digits than its factorization.

867864145236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214984 (or 214982 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 60.

The spelling of 867864145236 in words is "eight hundred sixty-seven billion, eight hundred sixty-four million, one hundred forty-five thousand, two hundred thirty-six".