1055580815800 has 48 divisors (see below), whose sum is σ = 2804829028560. Its totient is φ = 361913422080.

The previous prime is 1055580815761. The next prime is 1055580815803. The reversal of 1055580815800 is 85180855501.

It is a super-2 number, since 2×1055580815800² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055580815803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376991749 + ... + 376994548.

It is an arithmetic number, because the mean of its divisors is an integer number (58433938095).

Almost surely, 2^{1055580815800} is an apocalyptic number.

1055580815800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1055580815800 is an abundant number, since it is smaller than the sum of its proper divisors (1749248212760).

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

1055580815800 is a wasteful number, since it uses less digits than its factorization.

1055580815800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753986320 (or 753986311 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 46.

The spelling of 1055580815800 in words is "one trillion, fifty-five billion, five hundred eighty million, eight hundred fifteen thousand, eight hundred".