99477971018 has 8 divisors (see below), whose sum is σ = 157994424612. Its totient is φ = 46813162816.

The previous prime is 99477971011. The next prime is 99477971029. The reversal of 99477971018 is 81017977499.

99477971018 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 75307982929 + 24169988089 = 274423^2 + 155467^2 .

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 (99477971011) 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, 1462911305 + ... + 1462911372.

Almost surely, 2^99477971018 is an apocalyptic number.

99477971018 is a deficient number, since it is larger than the sum of its proper divisors (58516453594).

99477971018 is a wasteful number, since it uses less digits than its factorization.

99477971018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925822696.

The product of its (nonzero) digits is 8001504, while the sum is 62.

The spelling of 99477971018 in words is "ninety-nine billion, four hundred seventy-seven million, nine hundred seventy-one thousand, eighteen".