16065652440 has 32 divisors (see below), whose sum is σ = 48196957680. Its totient is φ = 4284173952.

The previous prime is 16065652429. The next prime is 16065652469. The reversal of 16065652440 is 4425656061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66940099 + ... + 66940338.

Almost surely, 2^16065652440 is an apocalyptic number.

16065652440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16065652440 is an abundant number, since it is smaller than the sum of its proper divisors (32131305240).

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

16065652440 is a wasteful number, since it uses less digits than its factorization.

16065652440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133880451 (or 133880447 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 16065652440 in words is "sixteen billion, sixty-five million, six hundred fifty-two thousand, four hundred forty".