99144911421 has 24 divisors (see below), whose sum is σ = 156862138680. Its totient is φ = 60063446016.

The previous prime is 99144911401. The next prime is 99144911431. The reversal of 99144911421 is 12411944199.

99144911421 is a `hidden beast` number, since 9 + 9 + 14 + 491 + 142 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2650808196 + 96494103225 = 51486^2 + 310635^2 .

It is not a de Polignac number, because 99144911421 - 2¹³ = 99144903229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99144911401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11168080 + ... + 11176953.

It is an arithmetic number, because the mean of its divisors is an integer number (6535922445).

Almost surely, 2^99144911421 is an apocalyptic number.

It is an amenable number.

99144911421 is a deficient number, since it is larger than the sum of its proper divisors (57717227259).

99144911421 is a wasteful number, since it uses less digits than its factorization.

99144911421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22345085 (or 22345082 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The spelling of 99144911421 in words is "ninety-nine billion, one hundred forty-four million, nine hundred eleven thousand, four hundred twenty-one".