78236903040 has 256 divisors, whose sum is σ = 260630334720. Its totient is φ = 19924844544.

The previous prime is 78236903033. The next prime is 78236903093. The reversal of 78236903040 is 4030963287.

It is a super-2 number, since 2×78236903040² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78236902983 and 78236903001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44026632 + ... + 44028408.

It is an arithmetic number, because the mean of its divisors is an integer number (1018087245).

Almost surely, 2^78236903040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78236903040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130315167360).

78236903040 is an abundant number, since it is smaller than the sum of its proper divisors (182393431680).

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

78236903040 is a wasteful number, since it uses less digits than its factorization.

78236903040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 78236903040 in words is "seventy-eight billion, two hundred thirty-six million, nine hundred three thousand, forty".