16450647864 has 64 divisors (see below), whose sum is σ = 47045456640. Its totient is φ = 4695824640.

The previous prime is 16450647859. The next prime is 16450647869. The reversal of 16450647864 is 46874605461.

It is an interprime number because it is at equal distance from previous prime (16450647859) and next prime (16450647869).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16450647869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138412 + ... + 228164.

It is an arithmetic number, because the mean of its divisors is an integer number (735085260).

Almost surely, 2^16450647864 is an apocalyptic number.

16450647864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16450647864 is an abundant number, since it is smaller than the sum of its proper divisors (30594808776).

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

16450647864 is a wasteful number, since it uses less digits than its factorization.

16450647864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90860 (or 90856 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 16450647864 in words is "sixteen billion, four hundred fifty million, six hundred forty-seven thousand, eight hundred sixty-four".