16503044134572 has 120 divisors (see below), whose sum is σ = 43775558053920. Its totient is φ = 5420349204480.

The previous prime is 16503044134553. The next prime is 16503044134639. The reversal of 16503044134572 is 27543144030561.

16503044134572 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 3 + 0 + 4 + 41 + 34 + 572 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39103948 + ... + 39523724.

It is an arithmetic number, because the mean of its divisors is an integer number (364796317116).

Almost surely, 2^{16503044134572} is an apocalyptic number.

16503044134572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16503044134572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21887779026960).

16503044134572 is an abundant number, since it is smaller than the sum of its proper divisors (27272513919348).

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

16503044134572 is a wasteful number, since it uses less digits than its factorization.

16503044134572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421573 (or 421562 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 16503044134572 in words is "sixteen trillion, five hundred three billion, forty-four million, one hundred thirty-four thousand, five hundred seventy-two".