99990603541 has 4 divisors (see below), whose sum is σ = 100026926892. Its totient is φ = 99954280192.

The previous prime is 99990603523. The next prime is 99990603551. The reversal of 99990603541 is 14530609999.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97799427441 + 2191176100 = 312729^2 + 46810^2 .

It is a cyclic number.

It is not a de Polignac number, because 99990603541 - 2¹⁹ = 99990079253 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 (99990603511) 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, 18157546 + ... + 18163051.

It is an arithmetic number, because the mean of its divisors is an integer number (25006731723).

Almost surely, 2^99990603541 is an apocalyptic number.

It is an amenable number.

99990603541 is a deficient number, since it is larger than the sum of its proper divisors (36323351).

99990603541 is a wasteful number, since it uses less digits than its factorization.

99990603541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36323350.

The product of its (nonzero) digits is 2361960, while the sum is 55.

The spelling of 99990603541 in words is "ninety-nine billion, nine hundred ninety million, six hundred three thousand, five hundred forty-one".