77554480359 has 4 divisors (see below), whose sum is σ = 103405973816. Its totient is φ = 51702986904.

The previous prime is 77554480349. The next prime is 77554480373. The reversal of 77554480359 is 95308445577.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 77554480359 - 2¹⁹ = 77553956071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77554480299 and 77554480308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77554480349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12925746724 + ... + 12925746729.

It is an arithmetic number, because the mean of its divisors is an integer number (25851493454).

Almost surely, 2^77554480359 is an apocalyptic number.

77554480359 is a deficient number, since it is larger than the sum of its proper divisors (25851493457).

77554480359 is a wasteful number, since it uses less digits than its factorization.

77554480359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25851493456.

The product of its (nonzero) digits is 21168000, while the sum is 57.

The spelling of 77554480359 in words is "seventy-seven billion, five hundred fifty-four million, four hundred eighty thousand, three hundred fifty-nine".