16253561484 has 36 divisors (see below), whose sum is σ = 43502180904. Its totient is φ = 5099156352.

The previous prime is 16253561437. The next prime is 16253561509. The reversal of 16253561484 is 48416535261.

16253561484 is a `hidden beast` number, since 1 + 6 + 2 + 5 + 3 + 561 + 4 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13278442 + ... + 13279665.

It is an arithmetic number, because the mean of its divisors is an integer number (1208393914).

Almost surely, 2^16253561484 is an apocalyptic number.

It is an amenable number.

16253561484 is an abundant number, since it is smaller than the sum of its proper divisors (27248619420).

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

16253561484 is a wasteful number, since it uses less digits than its factorization.

16253561484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26558134 (or 26558129 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 16253561484 in words is "sixteen billion, two hundred fifty-three million, five hundred sixty-one thousand, four hundred eighty-four".