1055055550000 has 120 divisors (see below), whose sum is σ = 2637473940864. Its totient is φ = 408408000000.

The previous prime is 1055055549973. The next prime is 1055055550061. The reversal of 1055055550000 is 555505501.

It is a super-2 number, since 2×1055055550000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1209660 + ... + 1890340.

Almost surely, 2^{1055055550000} is an apocalyptic number.

1055055550000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055055550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318736970432).

1055055550000 is an abundant number, since it is smaller than the sum of its proper divisors (1582418390864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1055055550000 is an frugal number, since it uses more digits than its factorization.

1055055550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680745 (or 680719 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 1055055550000 in words is "one trillion, fifty-five billion, fifty-five million, five hundred fifty thousand".