78333463828 has 12 divisors (see below), whose sum is σ = 140788523092. Its totient is φ = 38108171520.

The previous prime is 78333463801. The next prime is 78333463841. The reversal of 78333463828 is 82836433387.

It can be written as a sum of positive squares in 2 ways, for example, as 72518181264 + 5815282564 = 269292^2 + 76258^2 .

It is a super-2 number, since 2×78333463828² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264639933 + ... + 264640228.

Almost surely, 2^78333463828 is an apocalyptic number.

It is an amenable number.

78333463828 is a deficient number, since it is larger than the sum of its proper divisors (62455059264).

78333463828 is a wasteful number, since it uses less digits than its factorization.

78333463828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529280202 (or 529280200 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 55.

The spelling of 78333463828 in words is "seventy-eight billion, three hundred thirty-three million, four hundred sixty-three thousand, eight hundred twenty-eight".