16541764820 has 24 divisors (see below), whose sum is σ = 39700235904. Its totient is φ = 5671462176.

The previous prime is 16541764817. The next prime is 16541764829. The reversal of 16541764820 is 2846714561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16541764829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59077592 + ... + 59077871.

It is an arithmetic number, because the mean of its divisors is an integer number (1654176496).

Almost surely, 2^16541764820 is an apocalyptic number.

16541764820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16541764820 is an abundant number, since it is smaller than the sum of its proper divisors (23158471084).

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

16541764820 is a wasteful number, since it uses less digits than its factorization.

16541764820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118155479 (or 118155477 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 16541764820 in words is "sixteen billion, five hundred forty-one million, seven hundred sixty-four thousand, eight hundred twenty".