78140442004 has 24 divisors (see below), whose sum is σ = 138147871680. Its totient is φ = 38670031104.

The previous prime is 78140441993. The next prime is 78140442007. The reversal of 78140442004 is 40024404187.

It is a super-2 number, since 2×78140442004² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78140442007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728067 + ... + 828469.

It is an arithmetic number, because the mean of its divisors is an integer number (5756161320).

Almost surely, 2^78140442004 is an apocalyptic number.

It is an amenable number.

78140442004 is a deficient number, since it is larger than the sum of its proper divisors (60007429676).

78140442004 is a wasteful number, since it uses less digits than its factorization.

78140442004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102399 (or 102397 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 34.

The spelling of 78140442004 in words is "seventy-eight billion, one hundred forty million, four hundred forty-two thousand, four".