78292091041 has 4 divisors (see below), whose sum is σ = 78308785584. Its totient is φ = 78275396500.

The previous prime is 78292090993. The next prime is 78292091081. The reversal of 78292091041 is 14019029287.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78292091041 - 2⁹ = 78292090529 is a prime.

It is a super-2 number, since 2×78292091041² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78292091081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8340235 + ... + 8349616.

It is an arithmetic number, because the mean of its divisors is an integer number (19577196396).

Almost surely, 2^78292091041 is an apocalyptic number.

It is an amenable number.

78292091041 is a deficient number, since it is larger than the sum of its proper divisors (16694543).

78292091041 is a wasteful number, since it uses less digits than its factorization.

78292091041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16694542.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 78292091041 in words is "seventy-eight billion, two hundred ninety-two million, ninety-one thousand, forty-one".