77396855054720 has 64 divisors (see below), whose sum is σ = 185197076179200. Its totient is φ = 30930260840448.

The previous prime is 77396855054699. The next prime is 77396855054741. The reversal of 77396855054720 is 2745055869377.

It is an interprime number because it is at equal distance from previous prime (77396855054699) and next prime (77396855054741).

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×77396855054720² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54931085 + ... + 56322444.

It is an arithmetic number, because the mean of its divisors is an integer number (2893704315300).

Almost surely, 2^{77396855054720} is an apocalyptic number.

It is an amenable number.

77396855054720 is an abundant number, since it is smaller than the sum of its proper divisors (107800221124480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77396855054720 is a wasteful number, since it uses less digits than its factorization.

77396855054720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111254635 (or 111254623 counting only the distinct ones).

The product of its (nonzero) digits is 444528000, while the sum is 68.

The spelling of 77396855054720 in words is "seventy-seven trillion, three hundred ninety-six billion, eight hundred fifty-five million, fifty-four thousand, seven hundred twenty".