99045637538 has 8 divisors (see below), whose sum is σ = 148787909532. Its totient is φ = 49449667696.

The previous prime is 99045637531. The next prime is 99045637591. The reversal of 99045637538 is 83573654099.

It can be written as a sum of positive squares in 2 ways, for example, as 57248697289 + 41796940249 = 239267^2 + 204443^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (99045637531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36573845 + ... + 36576552.

Almost surely, 2^99045637538 is an apocalyptic number.

99045637538 is a deficient number, since it is larger than the sum of its proper divisors (49742271994).

99045637538 is a wasteful number, since it uses less digits than its factorization.

99045637538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73151076.

The product of its (nonzero) digits is 24494400, while the sum is 59.

The spelling of 99045637538 in words is "ninety-nine billion, forty-five million, six hundred thirty-seven thousand, five hundred thirty-eight".