99500945019840 has 560 divisors, whose sum is σ = 435621384149952. Its totient is φ = 20993605484544.

The previous prime is 99500945019829. The next prime is 99500945019859. The reversal of 99500945019840 is 4891054900599.

99500945019840 is a `hidden beast` number, since 9 + 9 + 50 + 0 + 9 + 450 + 1 + 98 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (560).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 18733429 + ... + 23450868.

Almost surely, 2^{99500945019840} is an apocalyptic number.

99500945019840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99500945019840 is an abundant number, since it is smaller than the sum of its proper divisors (336120439130112).

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

99500945019840 is a wasteful number, since it uses less digits than its factorization.

99500945019840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42184346 (or 42184327 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 63.

The spelling of 99500945019840 in words is "ninety-nine trillion, five hundred billion, nine hundred forty-five million, nineteen thousand, eight hundred forty".