99635587202 has 18 divisors (see below), whose sum is σ = 151985138409. Its totient is φ = 48987716520.

The previous prime is 99635587201. The next prime is 99635587211. The reversal of 99635587202 is 20278553699.

It can be written as a sum of positive squares in 2 ways, for example, as 67490324521 + 32145262681 = 259789^2 + 179291^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=223199.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99635587201) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 27228449 + ... + 27232107.

Almost surely, 2^99635587202 is an apocalyptic number.

99635587202 is a deficient number, since it is larger than the sum of its proper divisors (52349551207).

99635587202 is an frugal number, since it uses more digits than its factorization.

99635587202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7442 (or 3722 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 99635587202 in words is "ninety-nine billion, six hundred thirty-five million, five hundred eighty-seven thousand, two hundred two".