556953989109 has 80 divisors (see below), whose sum is σ = 878042242560. Its totient is φ = 313983462240.

The previous prime is 556953989107. The next prime is 556953989143. The reversal of 556953989109 is 901989359655.

It is not a de Polignac number, because 556953989109 - 2¹ = 556953989107 is a prime.

It is a super-2 number, since 2×556953989109² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556953989107) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 167201574 + ... + 167204904.

It is an arithmetic number, because the mean of its divisors is an integer number (10975528032).

Almost surely, 2^556953989109 is an apocalyptic number.

It is an amenable number.

556953989109 is a deficient number, since it is larger than the sum of its proper divisors (321088253451).

556953989109 is a wasteful number, since it uses less digits than its factorization.

556953989109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668 (or 3647 counting only the distinct ones).

The product of its (nonzero) digits is 118098000, while the sum is 69.

The spelling of 556953989109 in words is "five hundred fifty-six billion, nine hundred fifty-three million, nine hundred eighty-nine thousand, one hundred nine".