16634552556 has 24 divisors (see below), whose sum is σ = 39176706240. Its totient is φ = 5493029392.

The previous prime is 16634552551. The next prime is 16634552621. The reversal of 16634552556 is 65525543661.

It is a super-2 number, since 2×16634552556² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16634552551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6476346 + ... + 6478913.

It is an arithmetic number, because the mean of its divisors is an integer number (1632362760).

Almost surely, 2^16634552556 is an apocalyptic number.

It is an amenable number.

16634552556 is an abundant number, since it is smaller than the sum of its proper divisors (22542153684).

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

16634552556 is a wasteful number, since it uses less digits than its factorization.

16634552556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12955373 (or 12955371 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 48.

The spelling of 16634552556 in words is "sixteen billion, six hundred thirty-four million, five hundred fifty-two thousand, five hundred fifty-six".