16023400549776 has 135 divisors (see below), whose sum is σ = 45401353219339. Its totient is φ = 5275469551296.

The previous prime is 16023400549771. The next prime is 16023400549811. The reversal of 16023400549776 is 67794500432061.

The square root of 16023400549776 is 4002924.

It is a perfect power (a square), and thus also a powerful number.

16023400549776 is a `hidden beast` number, since 1 + 6 + 0 + 23 + 4 + 0 + 0 + 549 + 7 + 76 = 666.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16023400549771) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3986910295 + ... + 3986914313.

Almost surely, 2^{16023400549776} is an apocalyptic number.

16023400549776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16023400549776 is the 4002924-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16023400549776

16023400549776 is an abundant number, since it is smaller than the sum of its proper divisors (29377952669563).

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

16023400549776 is an frugal number, since it uses more digits than its factorization.

16023400549776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8218 (or 4107 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 16023400549776 in words is "sixteen trillion, twenty-three billion, four hundred million, five hundred forty-nine thousand, seven hundred seventy-six".