999790430100 has 144 divisors (see below), whose sum is σ = 3606516834816. Its totient is φ = 207748656000.

The previous prime is 999790430099. The next prime is 999790430101. The reversal of 999790430100 is 1034097999.

It is an interprime number because it is at equal distance from previous prime (999790430099) and next prime (999790430101).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999790430101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21617386 + ... + 21663585.

Almost surely, 2^999790430100 is an apocalyptic number.

It is an amenable number.

999790430100 is an abundant number, since it is smaller than the sum of its proper divisors (2606726404716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999790430100 is a wasteful number, since it uses less digits than its factorization.

999790430100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43281006 (or 43280999 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 51.

The spelling of 999790430100 in words is "nine hundred ninety-nine billion, seven hundred ninety million, four hundred thirty thousand, one hundred".