99827142644 has 12 divisors (see below), whose sum is σ = 174804885024. Its totient is φ = 49882889784.

The previous prime is 99827142631. The next prime is 99827142647. The reversal of 99827142644 is 44624172899.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 99827142644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99827142647) 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, 7663064 + ... + 7676079.

It is an arithmetic number, because the mean of its divisors is an integer number (14567073752).

Almost surely, 2^99827142644 is an apocalyptic number.

It is an amenable number.

99827142644 is a deficient number, since it is larger than the sum of its proper divisors (74977742380).

99827142644 is a wasteful number, since it uses less digits than its factorization.

99827142644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340774 (or 15340772 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 56.

The spelling of 99827142644 in words is "ninety-nine billion, eight hundred twenty-seven million, one hundred forty-two thousand, six hundred forty-four".