78503578753 has 16 divisors (see below), whose sum is σ = 83213544960. Its totient is φ = 73928131200.

The previous prime is 78503578733. The next prime is 78503578801. The reversal of 78503578753 is 35787530587.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78503578753 - 2³³ = 69913644161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78503578733) 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, 6422818 + ... + 6435028.

It is an arithmetic number, because the mean of its divisors is an integer number (5200846560).

Almost surely, 2^78503578753 is an apocalyptic number.

It is an amenable number.

78503578753 is a deficient number, since it is larger than the sum of its proper divisors (4709966207).

78503578753 is a wasteful number, since it uses less digits than its factorization.

78503578753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17688.

The product of its (nonzero) digits is 24696000, while the sum is 58.

The spelling of 78503578753 in words is "seventy-eight billion, five hundred three million, five hundred seventy-eight thousand, seven hundred fifty-three".