55777588577755 has 64 divisors (see below), whose sum is σ = 74007557245440. Its totient is φ = 40018866048000.

The previous prime is 55777588577747. The next prime is 55777588577783.

55777588577755 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55777588577755 - 2³ = 55777588577747 is a prime.

It is a super-2 number, since 2×55777588577755² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2006157684 + ... + 2006185486.

It is an arithmetic number, because the mean of its divisors is an integer number (1156368081960).

Almost surely, 2^{55777588577755} is an apocalyptic number.

55777588577755 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55777588577755 is a deficient number, since it is larger than the sum of its proper divisors (18229968667685).

55777588577755 is a wasteful number, since it uses less digits than its factorization.

55777588577755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29212.

The product of its digits is 117649000000, while the sum is 88.

The spelling of 55777588577755 in words is "fifty-five trillion, seven hundred seventy-seven billion, five hundred eighty-eight million, five hundred seventy-seven thousand, seven hundred fifty-five".