16271465328 has 400 divisors, whose sum is σ = 51724189440. Its totient is φ = 4920652800.

The previous prime is 16271465303. The next prime is 16271465341. The reversal of 16271465328 is 82356417261.

16271465328 is a `hidden beast` number, since 1 + 6 + 2 + 71 + 46 + 532 + 8 = 666.

It is a super-2 number, since 2×16271465328² (a number of 21 digits) contains 22 as substring.

Its product of digits (483840) is a multiple of the sum of its prime factors (378).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 71680351 + ... + 71680577.

Almost surely, 2^16271465328 is an apocalyptic number.

16271465328 is a gapful number since it is divisible by the number (18) 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 16271465328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25862094720).

16271465328 is an abundant number, since it is smaller than the sum of its proper divisors (35452724112).

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

16271465328 is a wasteful number, since it uses less digits than its factorization.

16271465328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 363 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 16271465328 in words is "sixteen billion, two hundred seventy-one million, four hundred sixty-five thousand, three hundred twenty-eight".