16263415643634 has 16 divisors (see below), whose sum is σ = 36140923652640. Its totient is φ = 5421138547860.

The previous prime is 16263415643611. The next prime is 16263415643687. The reversal of 16263415643634 is 43634651436261.

16263415643634 is a `hidden beast` number, since 1 + 6 + 2 + 6 + 3 + 41 + 564 + 3 + 6 + 34 = 666.

It is a super-2 number, since 2×16263415643634² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 301174363771 = 16263415643634 / (1 + 6 + 2 + 6 + 3 + 4 + 1 + 5 + 6 + 4 + 3 + 6 + 3 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150587181832 + ... + 150587181939.

It is an arithmetic number, because the mean of its divisors is an integer number (2258807728290).

Almost surely, 2^{16263415643634} is an apocalyptic number.

16263415643634 is an abundant number, since it is smaller than the sum of its proper divisors (19877508009006).

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

16263415643634 is a wasteful number, since it uses less digits than its factorization.

16263415643634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301174363782 (or 301174363776 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 54.

The spelling of 16263415643634 in words is "sixteen trillion, two hundred sixty-three billion, four hundred fifteen million, six hundred forty-three thousand, six hundred thirty-four".