55506777760555 has 16 divisors (see below), whose sum is σ = 72722446207488. Its totient is φ = 40335772284000.

The previous prime is 55506777760549. The next prime is 55506777760589.

55506777760555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55506777760555 - 2⁹ = 55506777760043 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409848681 + ... + 409984090.

It is an arithmetic number, because the mean of its divisors is an integer number (4545152887968).

Almost surely, 2^{55506777760555} is an apocalyptic number.

55506777760555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55506777760555 is a deficient number, since it is larger than the sum of its proper divisors (17215668446933).

55506777760555 is a wasteful number, since it uses less digits than its factorization.

55506777760555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819834018.

The product of its (nonzero) digits is 1350562500, while the sum is 70.

The spelling of 55506777760555 in words is "fifty-five trillion, five hundred six billion, seven hundred seventy-seven million, seven hundred sixty thousand, five hundred fifty-five".