78373853456 has 40 divisors (see below), whose sum is σ = 155104798104. Its totient is φ = 38350540800.

The previous prime is 78373853431. The next prime is 78373853479. The reversal of 78373853456 is 65435837387.

It can be written as a sum of positive squares in 4 ways, for example, as 46932889600 + 31440963856 = 216640^2 + 177316^2 .

It is a super-2 number, since 2×78373853456² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78373853395 and 78373853404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220256 + ... + 453056.

Almost surely, 2^78373853456 is an apocalyptic number.

It is an amenable number.

78373853456 is a deficient number, since it is larger than the sum of its proper divisors (76730944648).

78373853456 is a wasteful number, since it uses less digits than its factorization.

78373853456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233259 (or 233253 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 59.

The spelling of 78373853456 in words is "seventy-eight billion, three hundred seventy-three million, eight hundred fifty-three thousand, four hundred fifty-six".