77229591611 has 4 divisors (see below), whose sum is σ = 78538567800. Its totient is φ = 75920615424.

The previous prime is 77229591563. The next prime is 77229591623. The reversal of 77229591611 is 11619592277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11619592277 = 16703 ⋅695659.

It is a cyclic number.

It is not a de Polignac number, because 77229591611 - 2⁶ = 77229591547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77229591611.

It is not an unprimeable number, because it can be changed into a prime (77229591641) 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, 654488006 + ... + 654488123.

It is an arithmetic number, because the mean of its divisors is an integer number (19634641950).

Almost surely, 2^77229591611 is an apocalyptic number.

77229591611 is a deficient number, since it is larger than the sum of its proper divisors (1308976189).

77229591611 is a wasteful number, since it uses less digits than its factorization.

77229591611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308976188.

The product of its digits is 476280, while the sum is 50.

The spelling of 77229591611 in words is "seventy-seven billion, two hundred twenty-nine million, five hundred ninety-one thousand, six hundred eleven".