16534798017940 has 48 divisors (see below), whose sum is σ = 36885932899200. Its totient is φ = 6208333610112.

The previous prime is 16534798017923. The next prime is 16534798017943. The reversal of 16534798017940 is 4971089743561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16534798017943) 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, 199557784 + ... + 199640623.

It is an arithmetic number, because the mean of its divisors is an integer number (768456935400).

Almost surely, 2^{16534798017940} is an apocalyptic number.

16534798017940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16534798017940 is an abundant number, since it is smaller than the sum of its proper divisors (20351134881260).

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

16534798017940 is a wasteful number, since it uses less digits than its factorization.

16534798017940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399198544 (or 399198542 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 64.

The spelling of 16534798017940 in words is "sixteen trillion, five hundred thirty-four billion, seven hundred ninety-eight million, seventeen thousand, nine hundred forty".