16252646400 has 396 divisors, whose sum is σ = 60742055712. Its totient is φ = 4144250880.

The previous prime is 16252646383. The next prime is 16252646467. The reversal of 16252646400 is 464625261.

16252646400 is a `hidden beast` number, since 1 + 6 + 2 + 5 + 2 + 6 + 4 + 640 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5297667 + ... + 5300733.

Almost surely, 2^16252646400 is an apocalyptic number.

16252646400 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 16252646400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30371027856).

16252646400 is an abundant number, since it is smaller than the sum of its proper divisors (44489409312).

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

16252646400 is a wasteful number, since it uses less digits than its factorization.

16252646400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 16252646400 in words is "sixteen billion, two hundred fifty-two million, six hundred forty-six thousand, four hundred".