16235541504 has 616 divisors, whose sum is σ = 60140532480. Its totient is φ = 4263985152.

The previous prime is 16235541499. The next prime is 16235541547. The reversal of 16235541504 is 40514553261.

16235541504 is a `hidden beast` number, since 1 + 6 + 235 + 5 + 415 + 0 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 67931017 + ... + 67931255.

Almost surely, 2^16235541504 is an apocalyptic number.

16235541504 is a gapful number since it is divisible by the number (14) 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 16235541504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30070266240).

16235541504 is an abundant number, since it is smaller than the sum of its proper divisors (43904990976).

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

16235541504 is an equidigital number, since it uses as much as digits as its factorization.

16235541504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 16235541504 in words is "sixteen billion, two hundred thirty-five million, five hundred forty-one thousand, five hundred four".