78538267832 has 32 divisors (see below), whose sum is σ = 148238812800. Its totient is φ = 39008166624.

The previous prime is 78538267811. The next prime is 78538267837. The reversal of 78538267832 is 23876283587.

It is a super-3 number, since 3×78538267832³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78538267837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2707019 + ... + 2735877.

It is an arithmetic number, because the mean of its divisors is an integer number (4632462900).

Almost surely, 2^78538267832 is an apocalyptic number.

It is an amenable number.

78538267832 is a deficient number, since it is larger than the sum of its proper divisors (69700544968).

78538267832 is a wasteful number, since it uses less digits than its factorization.

78538267832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31115 (or 31111 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 59.

The spelling of 78538267832 in words is "seventy-eight billion, five hundred thirty-eight million, two hundred sixty-seven thousand, eight hundred thirty-two".