77121072442351 has 6 divisors (see below), whose sum is σ = 89712267943200. Its totient is φ = 66103776379116.

The previous prime is 77121072442331. The next prime is 77121072442387. The reversal of 77121072442351 is 15324427012177.

It is not a de Polignac number, because 77121072442351 - 2¹⁵ = 77121072409583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77121072442331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 786949718751 + ... + 786949718848.

It is an arithmetic number, because the mean of its divisors is an integer number (14952044657200).

Almost surely, 2^{77121072442351} is an apocalyptic number.

77121072442351 is a deficient number, since it is larger than the sum of its proper divisors (12591195500849).

77121072442351 is a wasteful number, since it uses less digits than its factorization.

77121072442351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573899437613 (or 1573899437606 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 46.

The spelling of 77121072442351 in words is "seventy-seven trillion, one hundred twenty-one billion, seventy-two million, four hundred forty-two thousand, three hundred fifty-one".