99405164857 has 8 divisors (see below), whose sum is σ = 99650575080. Its totient is φ = 99159828480.

The previous prime is 99405164797. The next prime is 99405164909. The reversal of 99405164857 is 75846150499.

It can be written as a sum of positive squares in 4 ways, for example, as 2607021481 + 96798143376 = 51059^2 + 311124^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99405164857 - 2¹¹ = 99405162809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99405164357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3484869 + ... + 3513277.

It is an arithmetic number, because the mean of its divisors is an integer number (12456321885).

Almost surely, 2^99405164857 is an apocalyptic number.

It is an amenable number.

99405164857 is a deficient number, since it is larger than the sum of its proper divisors (245410223).

99405164857 is a wasteful number, since it uses less digits than its factorization.

99405164857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36923.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 99405164857 in words is "ninety-nine billion, four hundred five million, one hundred sixty-four thousand, eight hundred fifty-seven".