1051055561000 has 64 divisors (see below), whose sum is σ = 2505875233680. Its totient is φ = 412489708800.

The previous prime is 1051055560991. The next prime is 1051055561029. The reversal of 1051055561000 is 1655501501.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 378252060484 + 672803500516 = 615022^2 + 820246^2 .

It is a super-2 number, since 2×1051055561000² (a number of 25 digits) contains 22 as substring.

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, 9862619 + ... + 9968618.

Almost surely, 2^{1051055561000} is an apocalyptic number.

1051055561000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051055561000 is an abundant number, since it is smaller than the sum of its proper divisors (1454819672680).

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

1051055561000 is a wasteful number, since it uses less digits than its factorization.

1051055561000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19831311 (or 19831297 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 1051055561000 in words is "one trillion, fifty-one billion, fifty-five million, five hundred sixty-one thousand".