16497197840 has 40 divisors (see below), whose sum is σ = 38362776768. Its totient is φ = 6597710720.

The previous prime is 16497197819. The next prime is 16497197891. The reversal of 16497197840 is 4879179461.

16497197840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543875 + ... + 573405.

Almost surely, 2^16497197840 is an apocalyptic number.

16497197840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16497197840 is an abundant number, since it is smaller than the sum of its proper divisors (21865578928).

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

16497197840 is a wasteful number, since it uses less digits than its factorization.

16497197840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36527 (or 36521 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 16497197840 in words is "sixteen billion, four hundred ninety-seven million, one hundred ninety-seven thousand, eight hundred forty".