16363452644 has 48 divisors (see below), whose sum is σ = 36204973056. Its totient is φ = 6285568800.

The previous prime is 16363452583. The next prime is 16363452653. The reversal of 16363452644 is 44625436361.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 16363452595 and 16363452604.

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, 352274 + ... + 396009.

It is an arithmetic number, because the mean of its divisors is an integer number (754270272).

Almost surely, 2^16363452644 is an apocalyptic number.

16363452644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16363452644 is an abundant number, since it is smaller than the sum of its proper divisors (19841520412).

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

16363452644 is a wasteful number, since it uses less digits than its factorization.

16363452644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748376 (or 748374 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 44.

The spelling of 16363452644 in words is "sixteen billion, three hundred sixty-three million, four hundred fifty-two thousand, six hundred forty-four".