16100645642452 has 72 divisors (see below), whose sum is σ = 33456613717800. Its totient is φ = 6758026813440.

The previous prime is 16100645642359. The next prime is 16100645642509. The reversal of 16100645642452 is 25424654600161.

It can be written as a sum of positive squares in 4 ways, for example, as 363905736516 + 15736739905936 = 603246^2 + 3966956^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104077 + ... + 5675572.

It is an arithmetic number, because the mean of its divisors is an integer number (464675190525).

Almost surely, 2^{16100645642452} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16100645642452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16728306858900).

16100645642452 is an abundant number, since it is smaller than the sum of its proper divisors (17355968075348).

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

16100645642452 is a wasteful number, since it uses less digits than its factorization.

16100645642452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5779961 (or 5779952 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 16100645642452 in words is "sixteen trillion, one hundred billion, six hundred forty-five million, six hundred forty-two thousand, four hundred fifty-two".