78260780353 has 4 divisors (see below), whose sum is σ = 89440891840. Its totient is φ = 67080668868.

The previous prime is 78260780327. The next prime is 78260780431. The reversal of 78260780353 is 35308706287.

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 78260780353 - 2¹⁷ = 78260649281 is a prime.

It is a super-2 number, since 2×78260780353² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78260780297 and 78260780306.

It is not an unprimeable number, because it can be changed into a prime (78260780453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5590055733 + ... + 5590055746.

It is an arithmetic number, because the mean of its divisors is an integer number (22360222960).

Almost surely, 2^78260780353 is an apocalyptic number.

It is an amenable number.

78260780353 is a deficient number, since it is larger than the sum of its proper divisors (11180111487).

78260780353 is a wasteful number, since it uses less digits than its factorization.

78260780353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11180111486.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 78260780353 in words is "seventy-eight billion, two hundred sixty million, seven hundred eighty thousand, three hundred fifty-three".