16553522015544 has 32 divisors (see below), whose sum is σ = 41384085793920. Its totient is φ = 5517803237856.

The previous prime is 16553522015543. The next prime is 16553522015593. The reversal of 16553522015544 is 44551022535561.

16553522015544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16553522015544² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16553522015493 and 16553522015502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16553522015543) 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, 1393269 + ... + 5920155.

It is an arithmetic number, because the mean of its divisors is an integer number (1293252681060).

Almost surely, 2^{16553522015544} is an apocalyptic number.

It is an amenable number.

16553522015544 is an abundant number, since it is smaller than the sum of its proper divisors (24830563778376).

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

16553522015544 is a wasteful number, since it uses less digits than its factorization.

16553522015544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679259 (or 4679255 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 48.

The spelling of 16553522015544 in words is "sixteen trillion, five hundred fifty-three billion, five hundred twenty-two million, fifteen thousand, five hundred forty-four".