78435211103 has 4 divisors (see below), whose sum is σ = 78557194968. Its totient is φ = 78313227240.

The previous prime is 78435211097. The next prime is 78435211117. The reversal of 78435211103 is 30111253487.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78435211103 - 2²⁸ = 78166775647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78435211003) 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 3 ways as a sum of consecutive naturals, for example, 60990968 + ... + 60992253.

It is an arithmetic number, because the mean of its divisors is an integer number (19639298742).

Almost surely, 2^78435211103 is an apocalyptic number.

78435211103 is a deficient number, since it is larger than the sum of its proper divisors (121983865).

78435211103 is a wasteful number, since it uses less digits than its factorization.

78435211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121983864.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 78435211103 in words is "seventy-eight billion, four hundred thirty-five million, two hundred eleven thousand, one hundred three".