865864429450 has 24 divisors (see below), whose sum is σ = 1610547855840. Its totient is φ = 346337166000.

The previous prime is 865864429433. The next prime is 865864429459. The reversal of 865864429450 is 54924468568.

It is a happy number.

865864429450 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 (61) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (865864429459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2054275 + ... + 2439625.

It is an arithmetic number, because the mean of its divisors is an integer number (67106160660).

Almost surely, 2^865864429450 is an apocalyptic number.

865864429450 is a deficient number, since it is larger than the sum of its proper divisors (744683426390).

865864429450 is a wasteful number, since it uses less digits than its factorization.

865864429450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430302 (or 430297 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 61.

The spelling of 865864429450 in words is "eight hundred sixty-five billion, eight hundred sixty-four million, four hundred twenty-nine thousand, four hundred fifty".