16635078252 has 72 divisors (see below), whose sum is σ = 46845948240. Its totient is φ = 4941982080.

The previous prime is 16635078209. The next prime is 16635078287. The reversal of 16635078252 is 25287053661.

16635078252 is a `hidden beast` number, since 1 + 6 + 63 + 507 + 82 + 5 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 16635078198 and 16635078207.

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, 599274 + ... + 626417.

It is an arithmetic number, because the mean of its divisors is an integer number (650638170).

Almost surely, 2^16635078252 is an apocalyptic number.

16635078252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16635078252 is an abundant number, since it is smaller than the sum of its proper divisors (30210869988).

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

16635078252 is a wasteful number, since it uses less digits than its factorization.

16635078252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225743 (or 1225738 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 16635078252 in words is "sixteen billion, six hundred thirty-five million, seventy-eight thousand, two hundred fifty-two".