16109872907436 has 216 divisors, whose sum is σ = 51193696200192. Its totient is φ = 4184372031840.

The previous prime is 16109872907423. The next prime is 16109872907477. The reversal of 16109872907436 is 63470927890161.

16109872907436 is a `hidden beast` number, since 1 + 6 + 109 + 8 + 7 + 2 + 90 + 7 + 436 = 666.

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

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40386381 + ... + 40783323.

Almost surely, 2^{16109872907436} 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 16109872907436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25596848100096).

16109872907436 is an abundant number, since it is smaller than the sum of its proper divisors (35083823292756).

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

16109872907436 is an equidigital number, since it uses as much as digits as its factorization.

16109872907436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397015 (or 396966 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 16109872907436 in words is "sixteen trillion, one hundred nine billion, eight hundred seventy-two million, nine hundred seven thousand, four hundred thirty-six".