77993154709 has 8 divisors (see below), whose sum is σ = 78888384000. Its totient is φ = 77098345632.

The previous prime is 77993154703. The next prime is 77993154719. The reversal of 77993154709 is 90745139977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77993154709 - 2⁷ = 77993154581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77993154703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276172 + ... + 481930.

It is an arithmetic number, because the mean of its divisors is an integer number (9861048000).

Almost surely, 2^77993154709 is an apocalyptic number.

It is an amenable number.

77993154709 is a deficient number, since it is larger than the sum of its proper divisors (895229291).

77993154709 is a wasteful number, since it uses less digits than its factorization.

77993154709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210107.

The product of its (nonzero) digits is 15002820, while the sum is 61.

The spelling of 77993154709 in words is "seventy-seven billion, nine hundred ninety-three million, one hundred fifty-four thousand, seven hundred nine".