77744777467393 has 8 divisors (see below), whose sum is σ = 78343884420480. Its totient is φ = 77146778947200.

The previous prime is 77744777467369. The next prime is 77744777467429. The reversal of 77744777467393 is 39376477744777.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77744777467393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77744777462393) 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, 276967405 + ... + 277247962.

It is an arithmetic number, because the mean of its divisors is an integer number (9792985552560).

Almost surely, 2^{77744777467393} is an apocalyptic number.

It is an amenable number.

77744777467393 is a deficient number, since it is larger than the sum of its proper divisors (599106953087).

77744777467393 is a wasteful number, since it uses less digits than its factorization.

77744777467393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554216447.

The product of its digits is 25615481472, while the sum is 82.

The spelling of 77744777467393 in words is "seventy-seven trillion, seven hundred forty-four billion, seven hundred seventy-seven million, four hundred sixty-seven thousand, three hundred ninety-three".