78133265741 has 4 divisors (see below), whose sum is σ = 78630930012. Its totient is φ = 77635601472.

The previous prime is 78133265729. The next prime is 78133265773. The reversal of 78133265741 is 14756233187.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34606788841 + 43526476900 = 186029^2 + 208630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78133265741 is a prime.

It is a super-2 number, since 2×78133265741² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78133261741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248831900 + ... + 248832213.

It is an arithmetic number, because the mean of its divisors is an integer number (19657732503).

Almost surely, 2^78133265741 is an apocalyptic number.

It is an amenable number.

78133265741 is a deficient number, since it is larger than the sum of its proper divisors (497664271).

78133265741 is a wasteful number, since it uses less digits than its factorization.

78133265741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497664270.

The product of its digits is 846720, while the sum is 47.

The spelling of 78133265741 in words is "seventy-eight billion, one hundred thirty-three million, two hundred sixty-five thousand, seven hundred forty-one".