99143995898 has 16 divisors (see below), whose sum is σ = 150488361000. Its totient is φ = 48981960192.

The previous prime is 99143995897. The next prime is 99143995919. The reversal of 99143995898 is 89859934199.

It can be written as a sum of positive squares in 4 ways, for example, as 31888316329 + 67255679569 = 178573^2 + 259337^2 .

It is not an unprimeable number, because it can be changed into a prime (99143995897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78008 + ... + 452076.

Almost surely, 2^99143995898 is an apocalyptic number.

99143995898 is a deficient number, since it is larger than the sum of its proper divisors (51344365102).

99143995898 is a wasteful number, since it uses less digits than its factorization.

99143995898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375649.

The product of its digits is 226748160, while the sum is 74.

The spelling of 99143995898 in words is "ninety-nine billion, one hundred forty-three million, nine hundred ninety-five thousand, eight hundred ninety-eight".