9955861588 has 12 divisors (see below), whose sum is σ = 18023542740. Its totient is φ = 4806277952.

The previous prime is 9955861541. The next prime is 9955861607. The reversal of 9955861588 is 8851685599.

It can be written as a sum of positive squares in 2 ways, for example, as 1970294544 + 7985567044 = 44388^2 + 89362^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42913081 + ... + 42913312.

It is an arithmetic number, because the mean of its divisors is an integer number (1501961895).

Almost surely, 2^9955861588 is an apocalyptic number.

It is an amenable number.

9955861588 is a deficient number, since it is larger than the sum of its proper divisors (8067681152).

9955861588 is a wasteful number, since it uses less digits than its factorization.

9955861588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85826426 (or 85826424 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 64.

The square root of 9955861588 is about 99779.0638761459. The cubic root of 9955861588 is about 2151.2602373982.

The spelling of 9955861588 in words is "nine billion, nine hundred fifty-five million, eight hundred sixty-one thousand, five hundred eighty-eight".