78582226919 has 16 divisors (see below), whose sum is σ = 90400267776. Its totient is φ = 66912674400.

The previous prime is 78582226913. The next prime is 78582226967. The reversal of 78582226919 is 91962228587.

It is a cyclic number.

It is not a de Polignac number, because 78582226919 - 2²⁸ = 78313791463 is a prime.

It is a super-2 number, since 2×78582226919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78582226913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2015924 + ... + 2054534.

It is an arithmetic number, because the mean of its divisors is an integer number (5650016736).

Almost surely, 2^78582226919 is an apocalyptic number.

78582226919 is a deficient number, since it is larger than the sum of its proper divisors (11818040857).

78582226919 is a wasteful number, since it uses less digits than its factorization.

78582226919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40526.

The product of its digits is 8709120, while the sum is 59.

The spelling of 78582226919 in words is "seventy-eight billion, five hundred eighty-two million, two hundred twenty-six thousand, nine hundred nineteen".