16764616554 has 64 divisors (see below), whose sum is σ = 39870109440. Its totient is φ = 4597931520.

The previous prime is 16764616499. The next prime is 16764616559. The reversal of 16764616554 is 45561646761.

It is a junction number, because it is equal to n+sod(n) for n = 16764616497 and 16764616506.

It is not an unprimeable number, because it can be changed into a prime (16764616559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170934 + ... + 250494.

It is an arithmetic number, because the mean of its divisors is an integer number (622970460).

Almost surely, 2^16764616554 is an apocalyptic number.

16764616554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16764616554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19935054720).

16764616554 is an abundant number, since it is smaller than the sum of its proper divisors (23105492886).

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

16764616554 is a wasteful number, since it uses less digits than its factorization.

16764616554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79775.

The product of its digits is 3628800, while the sum is 51.

The spelling of 16764616554 in words is "sixteen billion, seven hundred sixty-four million, six hundred sixteen thousand, five hundred fifty-four".