16369946640 has 80 divisors (see below), whose sum is σ = 56385379200. Its totient is φ = 4365318528.

The previous prime is 16369946633. The next prime is 16369946683. The reversal of 16369946640 is 4664996361.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3787180 + ... + 3791499.

It is an arithmetic number, because the mean of its divisors is an integer number (704817240).

Almost surely, 2^16369946640 is an apocalyptic number.

16369946640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16369946640 is an abundant number, since it is smaller than the sum of its proper divisors (40015432560).

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

16369946640 is a wasteful number, since it uses less digits than its factorization.

16369946640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7578701 (or 7578689 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 16369946640 in words is "sixteen billion, three hundred sixty-nine million, nine hundred forty-six thousand, six hundred forty".