16253645405452 has 48 divisors (see below), whose sum is σ = 37067137047360. Its totient is φ = 6051777472512.

The previous prime is 16253645405399. The next prime is 16253645405461. The reversal of 16253645405452 is 25450454635261.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 16253645405452.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1313313577 + ... + 1313325952.

It is an arithmetic number, because the mean of its divisors is an integer number (772232021820).

Almost surely, 2^{16253645405452} is an apocalyptic number.

It is an amenable number.

16253645405452 is an abundant number, since it is smaller than the sum of its proper divisors (20813491641908).

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

16253645405452 is a wasteful number, since it uses less digits than its factorization.

16253645405452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626639570 (or 2626639568 counting only the distinct ones).

The product of its (nonzero) digits is 17280000, while the sum is 52.

The spelling of 16253645405452 in words is "sixteen trillion, two hundred fifty-three billion, six hundred forty-five million, four hundred five thousand, four hundred fifty-two".