78381331105 has 16 divisors (see below), whose sum is σ = 117266615424. Its totient is φ = 48861089280.

The previous prime is 78381331073. The next prime is 78381331153. The reversal of 78381331105 is 50113318387.

It is not a de Polignac number, because 78381331105 - 2⁵ = 78381331073 is a prime.

It is a super-2 number, since 2×78381331105² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101793552 + ... + 101794321.

It is an arithmetic number, because the mean of its divisors is an integer number (7329163464).

Almost surely, 2^78381331105 is an apocalyptic number.

It is an amenable number.

78381331105 is a deficient number, since it is larger than the sum of its proper divisors (38885284319).

78381331105 is a wasteful number, since it uses less digits than its factorization.

78381331105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203587896.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 78381331105 in words is "seventy-eight billion, three hundred eighty-one million, three hundred thirty-one thousand, one hundred five".