16240771952640 has 1872 divisors, whose sum is σ = 63313258444800. Its totient is φ = 3988796866560.

The previous prime is 16240771952597. The next prime is 16240771952677. The reversal of 16240771952640 is 4625917704261.

16240771952640 is a `hidden beast` number, since 1 + 6 + 2 + 4 + 0 + 7 + 71 + 9 + 526 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 81611919261 + ... + 81611919459.

Almost surely, 2^{16240771952640} is an apocalyptic number.

16240771952640 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 16240771952640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31656629222400).

16240771952640 is an abundant number, since it is smaller than the sum of its proper divisors (47072486492160).

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

16240771952640 is an equidigital number, since it uses as much as digits as its factorization.

16240771952640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 16240771952640 in words is "sixteen trillion, two hundred forty billion, seven hundred seventy-one million, nine hundred fifty-two thousand, six hundred forty".