78361526436 has 48 divisors (see below), whose sum is σ = 185431661184. Its totient is φ = 25752830976.

The previous prime is 78361526417. The next prime is 78361526437. The reversal of 78361526436 is 63462516387.

It is a super-2 number, since 2×78361526436² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78361526437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178146 + ... + 434118.

It is an arithmetic number, because the mean of its divisors is an integer number (3863159608).

Almost surely, 2^78361526436 is an apocalyptic number.

It is an amenable number.

78361526436 is an abundant number, since it is smaller than the sum of its proper divisors (107070134748).

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

78361526436 is a wasteful number, since it uses less digits than its factorization.

78361526436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256340 (or 256338 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 51.

The spelling of 78361526436 in words is "seventy-eight billion, three hundred sixty-one million, five hundred twenty-six thousand, four hundred thirty-six".