99174965421420 has 192 divisors, whose sum is σ = 371181157401600. Its totient is φ = 21475481218560.

The previous prime is 99174965421379. The next prime is 99174965421421. The reversal of 99174965421420 is 2412456947199.

99174965421420 is a `hidden beast` number, since 9 + 9 + 1 + 7 + 49 + 6 + 542 + 1 + 42 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (99174965421421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 690369321 + ... + 690512960.

It is an arithmetic number, because the mean of its divisors is an integer number (1933235194800).

Almost surely, 2^{99174965421420} is an apocalyptic number.

99174965421420 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99174965421420 is an abundant number, since it is smaller than the sum of its proper divisors (272006191980180).

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

99174965421420 is a wasteful number, since it uses less digits than its factorization.

99174965421420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380882325 (or 1380882317 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 99174965421420 in words is "ninety-nine trillion, one hundred seventy-four billion, nine hundred sixty-five million, four hundred twenty-one thousand, four hundred twenty".