99856039558 has 32 divisors (see below), whose sum is σ = 165701741472. Its totient is φ = 44754124800.

The previous prime is 99856039553. The next prime is 99856039609. The reversal of 99856039558 is 85593065899.

It is a junction number, because it is equal to n+sod(n) for n = 99856039493 and 99856039502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99856039553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375738 + ... + 583858.

It is an arithmetic number, because the mean of its divisors is an integer number (5178179421).

Almost surely, 2^99856039558 is an apocalyptic number.

99856039558 is a deficient number, since it is larger than the sum of its proper divisors (65845701914).

99856039558 is a wasteful number, since it uses less digits than its factorization.

99856039558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208440.

The product of its (nonzero) digits is 104976000, while the sum is 67.

The spelling of 99856039558 in words is "ninety-nine billion, eight hundred fifty-six million, thirty-nine thousand, five hundred fifty-eight".