10561055554 has 48 divisors (see below), whose sum is σ = 19541667960. Its totient is φ = 4253437440.

The previous prime is 10561055509. The next prime is 10561055633. The reversal of 10561055554 is 45555016501.

It can be written as a sum of positive squares in 4 ways, for example, as 9182047329 + 1379008225 = 95823^2 + 37135^2 .

It is a super-2 number, since 2×10561055554² (a number of 21 digits) contains 22 as substring.

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, 1176724 + ... + 1185664.

Almost surely, 2^10561055554 is an apocalyptic number.

10561055554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

10561055554 is a deficient number, since it is larger than the sum of its proper divisors (8980612406).

10561055554 is a wasteful number, since it uses less digits than its factorization.

10561055554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9683 (or 9676 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 37.

The spelling of 10561055554 in words is "ten billion, five hundred sixty-one million, fifty-five thousand, five hundred fifty-four".