1623664011622 has 4 divisors (see below), whose sum is σ = 2435496017436. Its totient is φ = 811832005810.

The previous prime is 1623664011617. The next prime is 1623664011623. The reversal of 1623664011622 is 2261104663261.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623664011623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405916002904 + ... + 405916002907.

It is an arithmetic number, because the mean of its divisors is an integer number (608874004359).

Almost surely, 2^{1623664011622} is an apocalyptic number.

1623664011622 is a deficient number, since it is larger than the sum of its proper divisors (811832005814).

1623664011622 is an equidigital number, since it uses as much as digits as its factorization.

1623664011622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811832005813.

The product of its (nonzero) digits is 124416, while the sum is 40.

Adding to 1623664011622 its reverse (2261104663261), we get a palindrome (3884768674883).

The spelling of 1623664011622 in words is "one trillion, six hundred twenty-three billion, six hundred sixty-four million, eleven thousand, six hundred twenty-two".