16649087436 has 48 divisors (see below), whose sum is σ = 43567735680. Its totient is φ = 5497825680.

The previous prime is 16649087417. The next prime is 16649087449. The reversal of 16649087436 is 63478094661.

16649087436 is a `hidden beast` number, since 166 + 49 + 0 + 8 + 7 + 436 = 666.

It is a super-2 number, since 2×16649087436² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 708810 + ... + 731921.

It is an arithmetic number, because the mean of its divisors is an integer number (907661160).

Almost surely, 2^16649087436 is an apocalyptic number.

It is an amenable number.

16649087436 is an abundant number, since it is smaller than the sum of its proper divisors (26918648244).

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

16649087436 is a wasteful number, since it uses less digits than its factorization.

16649087436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440851 (or 1440843 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 16649087436 in words is "sixteen billion, six hundred forty-nine million, eighty-seven thousand, four hundred thirty-six".