16201657692424 has 8 divisors (see below), whose sum is σ = 30378108173310. Its totient is φ = 8100828846208.

The previous prime is 16201657692391. The next prime is 16201657692443. The reversal of 16201657692424 is 42429675610261.

It can be written as a sum of positive squares in only one way, i.e., 13073648062500 + 3128009629924 = 3615750^2 + 1768618^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012603605769 + ... + 1012603605784.

Almost surely, 2^{16201657692424} is an apocalyptic number.

It is an amenable number.

16201657692424 is a deficient number, since it is larger than the sum of its proper divisors (14176450480886).

16201657692424 is a wasteful number, since it uses less digits than its factorization.

16201657692424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025207211559 (or 2025207211555 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 16201657692424 in words is "sixteen trillion, two hundred one billion, six hundred fifty-seven million, six hundred ninety-two thousand, four hundred twenty-four".