1000000055509 has 64 divisors (see below), whose sum is σ = 1373034184704. Its totient is φ = 705372281856.

The previous prime is 1000000055507. The next prime is 1000000055519. The reversal of 1000000055509 is 9055500000001.

It is not a de Polignac number, because 1000000055509 - 2¹ = 1000000055507 is a prime.

It is a super-2 number, since 2×1000000055509² (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 (1000000055507) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3528412 + ... + 3801274.

It is an arithmetic number, because the mean of its divisors is an integer number (21453659136).

Almost surely, 2^{1000000055509} is an apocalyptic number.

It is an amenable number.

1000000055509 is a deficient number, since it is larger than the sum of its proper divisors (373034129195).

1000000055509 is a wasteful number, since it uses less digits than its factorization.

1000000055509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273026.

The product of its (nonzero) digits is 1125, while the sum is 25.

The spelling of 1000000055509 in words is "one trillion, fifty-five thousand, five hundred nine".