865145418994629 has 10 divisors (see below), whose sum is σ = 1292377724671110. Its totient is φ = 576763612663032.

The previous prime is 865145418994621. The next prime is 865145418994651. The reversal of 865145418994629 is 926499814541568.

865145418994629 is a `hidden beast` number, since 8 + 6 + 5 + 1 + 4 + 54 + 18 + 99 + 462 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 721681319472129 + 143464099522500 = 26864127^2 + 11977650^2 .

It is not a de Polignac number, because 865145418994629 - 2³ = 865145418994621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81), and also a Moran number because the ratio is a prime number: 10680807641909 = 865145418994629 / (8 + 6 + 5 + 1 + 4 + 5 + 4 + 1 + 8 + 9 + 9 + 4 + 6 + 2 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865145418994621) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5340403820874 + ... + 5340403821035.

It is an arithmetic number, because the mean of its divisors is an integer number (129237772467111).

Almost surely, 2^{865145418994629} is an apocalyptic number.

It is an amenable number.

865145418994629 is a deficient number, since it is larger than the sum of its proper divisors (427232305676481).

865145418994629 is a wasteful number, since it uses less digits than its factorization.

865145418994629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680807641921 (or 10680807641912 counting only the distinct ones).

The product of its digits is 5374771200, while the sum is 81.

The spelling of 865145418994629 in words is "eight hundred sixty-five trillion, one hundred forty-five billion, four hundred eighteen million, nine hundred ninety-four thousand, six hundred twenty-nine".