16109054640 has 240 divisors, whose sum is σ = 64516727808. Its totient is φ = 3521954304.

The previous prime is 16109054629. The next prime is 16109054641. The reversal of 16109054640 is 4645090161.

16109054640 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 9 + 0 + 5 + 4 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a junction number, because it is equal to n+sod(n) for n = 16109054595 and 16109054604.

It is not an unprimeable number, because it can be changed into a prime (16109054641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46437 + ... + 185403.

Almost surely, 2^16109054640 is an apocalyptic number.

16109054640 is a gapful number since it is divisible by the number (10) 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 16109054640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32258363904).

16109054640 is an abundant number, since it is smaller than the sum of its proper divisors (48407673168).

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

16109054640 is a wasteful number, since it uses less digits than its factorization.

16109054640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139016 (or 139007 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 16109054640 in words is "sixteen billion, one hundred nine million, fifty-four thousand, six hundred forty".