1055506665550 has 12 divisors (see below), whose sum is σ = 1963242398016. Its totient is φ = 422202666200.

The previous prime is 1055506665523. The next prime is 1055506665571. The reversal of 1055506665550 is 555666055501.

It is a super-2 number, since 2×1055506665550² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1055506665494 and 1055506665503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10555066606 + ... + 10555066705.

It is an arithmetic number, because the mean of its divisors is an integer number (163603533168).

Almost surely, 2^{1055506665550} is an apocalyptic number.

1055506665550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1055506665550 is a deficient number, since it is larger than the sum of its proper divisors (907735732466).

1055506665550 is a wasteful number, since it uses less digits than its factorization.

1055506665550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21110133323 (or 21110133318 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 49.

It can be divided in two parts, 1055 and 506665550, that added together give a palindrome (506666605).

The spelling of 1055506665550 in words is "one trillion, fifty-five billion, five hundred six million, six hundred sixty-five thousand, five hundred fifty".