16707432557 has 16 divisors (see below), whose sum is σ = 17332521600. Its totient is φ = 16095723840.

The previous prime is 16707432523. The next prime is 16707432571. The reversal of 16707432557 is 75523470761.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16707432557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16707432757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988544 + ... + 1005302.

It is an arithmetic number, because the mean of its divisors is an integer number (1083282600).

Almost surely, 2^16707432557 is an apocalyptic number.

It is an amenable number.

16707432557 is a deficient number, since it is larger than the sum of its proper divisors (625089043).

16707432557 is a wasteful number, since it uses less digits than its factorization.

16707432557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17156.

The product of its (nonzero) digits is 1234800, while the sum is 47.

The spelling of 16707432557 in words is "sixteen billion, seven hundred seven million, four hundred thirty-two thousand, five hundred fifty-seven".