99400964811 has 4 divisors (see below), whose sum is σ = 132534619752. Its totient is φ = 66267309872.

The previous prime is 99400964807. The next prime is 99400964879. The reversal of 99400964811 is 11846900499.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99400964811 - 2² = 99400964807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99400964801) 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, 16566827466 + ... + 16566827471.

It is an arithmetic number, because the mean of its divisors is an integer number (33133654938).

Almost surely, 2^99400964811 is an apocalyptic number.

99400964811 is a deficient number, since it is larger than the sum of its proper divisors (33133654941).

99400964811 is a wasteful number, since it uses less digits than its factorization.

99400964811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33133654940.

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 99400964811 in words is "ninety-nine billion, four hundred million, nine hundred sixty-four thousand, eight hundred eleven".