16442621525540 has 48 divisors (see below), whose sum is σ = 39464978015232. Its totient is φ = 5637086472576.

The previous prime is 16442621525509. The next prime is 16442621525593. The reversal of 16442621525540 is 4552512624461.

It is a super-3 number, since 3×16442621525540³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1929812 + ... + 6050571.

It is an arithmetic number, because the mean of its divisors is an integer number (822187041984).

Almost surely, 2^{16442621525540} is an apocalyptic number.

16442621525540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16442621525540 is an abundant number, since it is smaller than the sum of its proper divisors (23022356489692).

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

16442621525540 is a wasteful number, since it uses less digits than its factorization.

16442621525540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7995116 (or 7995114 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 47.

The spelling of 16442621525540 in words is "sixteen trillion, four hundred forty-two billion, six hundred twenty-one million, five hundred twenty-five thousand, five hundred forty".