77553585355 has 4 divisors (see below), whose sum is σ = 93064302432. Its totient is φ = 62042868280.

The previous prime is 77553585337. The next prime is 77553585359. The reversal of 77553585355 is 55358535577.

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

It is not a de Polignac number, because 77553585355 - 2²³ = 77545196747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77553585355.

It is not an unprimeable number, because it can be changed into a prime (77553585359) 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, 7755358531 + ... + 7755358540.

It is an arithmetic number, because the mean of its divisors is an integer number (23266075608).

Almost surely, 2^77553585355 is an apocalyptic number.

77553585355 is a deficient number, since it is larger than the sum of its proper divisors (15510717077).

77553585355 is a wasteful number, since it uses less digits than its factorization.

77553585355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15510717076.

The product of its digits is 55125000, while the sum is 58.

The spelling of 77553585355 in words is "seventy-seven billion, five hundred fifty-three million, five hundred eighty-five thousand, three hundred fifty-five".