80778332535 has 8 divisors (see below), whose sum is σ = 129245332080. Its totient is φ = 43081777344.

The previous prime is 80778332521. The next prime is 80778332561. The reversal of 80778332535 is 53523387708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80778332535 - 2¹³ = 80778324343 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2692611070 + ... + 2692611099.

It is an arithmetic number, because the mean of its divisors is an integer number (16155666510).

Almost surely, 2^80778332535 is an apocalyptic number.

80778332535 is a deficient number, since it is larger than the sum of its proper divisors (48466999545).

80778332535 is a wasteful number, since it uses less digits than its factorization.

80778332535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5385222177.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 80778332535 in words is "eighty billion, seven hundred seventy-eight million, three hundred thirty-two thousand, five hundred thirty-five".