16286342640 has 80 divisors (see below), whose sum is σ = 50503481856. Its totient is φ = 4341664000.

The previous prime is 16286342623. The next prime is 16286342731. The reversal of 16286342640 is 4624368261.

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

It is a junction number, because it is equal to n+sod(n) for n = 16286342592 and 16286342601.

It is a congruent number.

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, 929965 + ... + 947315.

Almost surely, 2^16286342640 is an apocalyptic number.

16286342640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16286342640 is an abundant number, since it is smaller than the sum of its proper divisors (34217139216).

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

16286342640 is a wasteful number, since it uses less digits than its factorization.

16286342640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21278 (or 21272 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 16286342640 in words is "sixteen billion, two hundred eighty-six million, three hundred forty-two thousand, six hundred forty".