99655271424 has 198 divisors, whose sum is σ = 300822080286. Its totient is φ = 31772590080.

The previous prime is 99655271371. The next prime is 99655271467. The reversal of 99655271424 is 42417255699.

It is a happy number.

99655271424 is a `hidden beast` number, since 9 + 96 + 5 + 527 + 1 + 4 + 24 = 666.

It can be written as a sum of positive squares in only one way, i.e., 95555174400 + 4100097024 = 309120^2 + 64032^2 .

It is a super-2 number, since 2×99655271424² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4865044 + ... + 4885484.

Almost surely, 2^99655271424 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 99655271424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150411040143).

99655271424 is an abundant number, since it is smaller than the sum of its proper divisors (201166808862).

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

99655271424 is a wasteful number, since it uses less digits than its factorization.

99655271424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20513 (or 20469 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 99655271424 in words is "ninety-nine billion, six hundred fifty-five million, two hundred seventy-one thousand, four hundred twenty-four".