9957608558 has 4 divisors (see below), whose sum is σ = 14936412840. Its totient is φ = 4978804278.

The previous prime is 9957608539. The next prime is 9957608567. The reversal of 9957608558 is 8558067599.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9957608558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489402138 + ... + 2489402141.

It is an arithmetic number, because the mean of its divisors is an integer number (3734103210).

Almost surely, 2^9957608558 is an apocalyptic number.

9957608558 is a deficient number, since it is larger than the sum of its proper divisors (4978804282).

9957608558 is a wasteful number, since it uses less digits than its factorization.

9957608558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978804281.

The product of its (nonzero) digits is 27216000, while the sum is 62.

The square root of 9957608558 is about 99787.8176833224. The cubic root of 9957608558 is about 2151.3860583285.

The spelling of 9957608558 in words is "nine billion, nine hundred fifty-seven million, six hundred eight thousand, five hundred fifty-eight".