16255215032640 has 224 divisors, whose sum is σ = 53961337092096. Its totient is φ = 4138011863040.

The previous prime is 16255215032633. The next prime is 16255215032669. The reversal of 16255215032640 is 4623051255261.

It is a junction number, because it is equal to n+sod(n) for n = 16255215032592 and 16255215032601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10374435 + ... + 11838045.

It is an arithmetic number, because the mean of its divisors is an integer number (240898826304).

Almost surely, 2^{16255215032640} is an apocalyptic number.

16255215032640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16255215032640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26980668546048).

16255215032640 is an abundant number, since it is smaller than the sum of its proper divisors (37706122059456).

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

16255215032640 is a wasteful number, since it uses less digits than its factorization.

16255215032640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464157 (or 1464147 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 16255215032640 in words is "sixteen trillion, two hundred fifty-five billion, two hundred fifteen million, thirty-two thousand, six hundred forty".