16043457780 has 144 divisors (see below), whose sum is σ = 57677343360. Its totient is φ = 3667068288.

The previous prime is 16043457769. The next prime is 16043457799. The reversal of 16043457780 is 8775434061.

16043457780 is a `hidden beast` number, since 1 + 604 + 34 + 5 + 7 + 7 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 201775 + ... + 269814.

Almost surely, 2^16043457780 is an apocalyptic number.

16043457780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16043457780 is an abundant number, since it is smaller than the sum of its proper divisors (41633885580).

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

16043457780 is a wasteful number, since it uses less digits than its factorization.

16043457780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471620 (or 471606 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 16043457780 in words is "sixteen billion, forty-three million, four hundred fifty-seven thousand, seven hundred eighty".