16764635540 has 24 divisors (see below), whose sum is σ = 35360835552. Its totient is φ = 6676311200.

The previous prime is 16764635521. The next prime is 16764635543. The reversal of 16764635540 is 4553646761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16764635543) 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, 1841786 + ... + 1850865.

It is an arithmetic number, because the mean of its divisors is an integer number (1473368148).

Almost surely, 2^16764635540 is an apocalyptic number.

16764635540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16764635540 is an abundant number, since it is smaller than the sum of its proper divisors (18596200012).

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

16764635540 is a wasteful number, since it uses less digits than its factorization.

16764635540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692887 (or 3692885 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 16764635540 in words is "sixteen billion, seven hundred sixty-four million, six hundred thirty-five thousand, five hundred forty".