99535401000 has 384 divisors, whose sum is σ = 390246255360. Its totient is φ = 22410432000.

The previous prime is 99535400999. The next prime is 99535401037. The reversal of 99535401000 is 10453599.

99535401000 is a `hidden beast` number, since 9 + 9 + 5 + 3 + 540 + 100 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4209210 + ... + 4232790.

It is an arithmetic number, because the mean of its divisors is an integer number (1016266290).

Almost surely, 2^99535401000 is an apocalyptic number.

99535401000 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99535401000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195123127680).

99535401000 is an abundant number, since it is smaller than the sum of its proper divisors (290710854360).

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

99535401000 is a wasteful number, since it uses less digits than its factorization.

99535401000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23682 (or 23665 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

Adding to 99535401000 its reverse (10453599), we get a palindrome (99545854599).

The spelling of 99535401000 in words is "ninety-nine billion, five hundred thirty-five million, four hundred one thousand".