866787624645432 has 128 divisors (see below), whose sum is σ = 2606892288000000. Its totient is φ = 234618107423616.

The previous prime is 866787624645407. The next prime is 866787624645433. The reversal of 866787624645432 is 234546426787668.

866787624645432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (78) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866787624645433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 865422069 + ... + 866423067.

It is an arithmetic number, because the mean of its divisors is an integer number (20366346000000).

Almost surely, 2^{866787624645432} is an apocalyptic number.

It is an amenable number.

866787624645432 is an abundant number, since it is smaller than the sum of its proper divisors (1740104663354568).

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

866787624645432 is a wasteful number, since it uses less digits than its factorization.

866787624645432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272313 (or 1272309 counting only the distinct ones).

The product of its digits is 15606743040, while the sum is 78.

The spelling of 866787624645432 in words is "eight hundred sixty-six trillion, seven hundred eighty-seven billion, six hundred twenty-four million, six hundred forty-five thousand, four hundred thirty-two".