77739227774 has 16 divisors (see below), whose sum is σ = 128499190512. Its totient is φ = 35045232768.

The previous prime is 77739227723. The next prime is 77739227779. The reversal of 77739227774 is 47772293777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77739227779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34765979 + ... + 34768214.

It is an arithmetic number, because the mean of its divisors is an integer number (8031199407).

Almost surely, 2^77739227774 is an apocalyptic number.

77739227774 is a deficient number, since it is larger than the sum of its proper divisors (50759962738).

77739227774 is a wasteful number, since it uses less digits than its factorization.

77739227774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69534251.

The product of its digits is 50824368, while the sum is 62.

The spelling of 77739227774 in words is "seventy-seven billion, seven hundred thirty-nine million, two hundred twenty-seven thousand, seven hundred seventy-four".