99423261504 has 336 divisors, whose sum is σ = 337421500416. Its totient is φ = 27390182400.

The previous prime is 99423261493. The next prime is 99423261589. The reversal of 99423261504 is 40516232499.

99423261504 is a `hidden beast` number, since 9 + 9 + 4 + 23 + 2 + 615 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a self number, because there is not a number n which added to its sum of digits gives 99423261504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38371249 + ... + 38373839.

It is an arithmetic number, because the mean of its divisors is an integer number (1004230656).

Almost surely, 2^99423261504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99423261504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168710750208).

99423261504 is an abundant number, since it is smaller than the sum of its proper divisors (237998238912).

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

99423261504 is a wasteful number, since it uses less digits than its factorization.

99423261504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954 (or 2941 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 99423261504 in words is "ninety-nine billion, four hundred twenty-three million, two hundred sixty-one thousand, five hundred four".