78503677433 has 16 divisors (see below), whose sum is σ = 80887689936. Its totient is φ = 76155206400.

The previous prime is 78503677397. The next prime is 78503677451. The reversal of 78503677433 is 33477630587.

It can be written as a sum of positive squares in 8 ways, for example, as 9606352144 + 68897325289 = 98012^2 + 262483^2 .

It is a cyclic number.

It is not a de Polignac number, because 78503677433 - 2¹⁰ = 78503676409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78503607433) 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, 4042535 + ... + 4061907.

It is an arithmetic number, because the mean of its divisors is an integer number (5055480621).

Almost surely, 2^78503677433 is an apocalyptic number.

It is an amenable number.

78503677433 is a deficient number, since it is larger than the sum of its proper divisors (2384012503).

78503677433 is a wasteful number, since it uses less digits than its factorization.

78503677433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20284.

The product of its (nonzero) digits is 8890560, while the sum is 53.

The spelling of 78503677433 in words is "seventy-eight billion, five hundred three million, six hundred seventy-seven thousand, four hundred thirty-three".