16507757680 has 40 divisors (see below), whose sum is σ = 38638152000. Its totient is φ = 6558782208.

The previous prime is 16507757653. The next prime is 16507757683. The reversal of 16507757680 is 8675770561.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16507757683) 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, 680520 + ... + 704359.

It is an arithmetic number, because the mean of its divisors is an integer number (965953800).

Almost surely, 2^16507757680 is an apocalyptic number.

16507757680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16507757680 is an abundant number, since it is smaller than the sum of its proper divisors (22130394320).

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

16507757680 is a wasteful number, since it uses less digits than its factorization.

16507757680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385041 (or 1385035 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 52.

The spelling of 16507757680 in words is "sixteen billion, five hundred seven million, seven hundred fifty-seven thousand, six hundred eighty".