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99233000641 = 181873545617

99233000641 has 4 divisors (see below), whose sum is σ = 99233728132. Its totient is φ = 99232273152.

The previous prime is 99233000621. The next prime is 99233000663. The reversal of 99233000641 is 14600033299.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 31279459600 + 67953541041 = 176860^2 + 260679^2 .

It is a 3-Lehmer number, since φ(99233000641) divides (99233000641-1)3.

It is a cyclic number.

It is not a de Polignac number, because 99233000641 - 29 = 99233000129 is a prime.

It is a deceptive number, since it divides R99233000640.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99233000641.

It is not an unprimeable number, because it can be changed into a prime (99233000621) 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, 90936 + ... + 454681.

It is an arithmetic number, because the mean of its divisors is an integer number (24808432033).

It is a Poulet number, since it divides 299233000640-1.

Almost surely, 299233000641 is an apocalyptic number.

99233000641 is the 181873-rd octagonal number.

It is an amenable number.

99233000641 is a deficient number, since it is larger than the sum of its proper divisors (727491).

99233000641 is a wasteful number, since it uses less digits than its factorization.

99233000641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727490.

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 99233000641 in words is "ninety-nine billion, two hundred thirty-three million, six hundred forty-one", and thus it is an aban number.

Divisors: 1 181873 545617 99233000641