78508287373 has 16 divisors (see below), whose sum is σ = 80218512000. Its totient is φ = 76806924480.

The previous prime is 78508287329. The next prime is 78508287379. The reversal of 78508287373 is 37378280587.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78508287373 - 2⁹ = 78508286861 is a prime.

It is a super-2 number, since 2×78508287373² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78508287379) 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 15 ways as a sum of consecutive naturals, for example, 46207678 + ... + 46209376.

It is an arithmetic number, because the mean of its divisors is an integer number (5013657000).

Almost surely, 2^78508287373 is an apocalyptic number.

It is an amenable number.

78508287373 is a deficient number, since it is larger than the sum of its proper divisors (1710224627).

78508287373 is a wasteful number, since it uses less digits than its factorization.

78508287373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732.

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 78508287373 in words is "seventy-eight billion, five hundred eight million, two hundred eighty-seven thousand, three hundred seventy-three".