99528714421 has 6 divisors (see below), whose sum is σ = 102842886966. Its totient is φ = 96318109800.

The previous prime is 99528714319. The next prime is 99528714433. The reversal of 99528714421 is 12441782599.

It can be written as a sum of positive squares in only one way, i.e., 70564078321 + 28964636100 = 265639^2 + 170190^2 .

It is not a de Polignac number, because 99528714421 - 2¹³ = 99528706229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99528774421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51782970 + ... + 51784891.

It is an arithmetic number, because the mean of its divisors is an integer number (17140481161).

Almost surely, 2^99528714421 is an apocalyptic number.

It is an amenable number.

99528714421 is a deficient number, since it is larger than the sum of its proper divisors (3314172545).

99528714421 is a wasteful number, since it uses less digits than its factorization.

99528714421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103567923 (or 103567892 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

The spelling of 99528714421 in words is "ninety-nine billion, five hundred twenty-eight million, seven hundred fourteen thousand, four hundred twenty-one".