1623720668046 has 16 divisors (see below), whose sum is σ = 3352197508608. Its totient is φ = 523780860600.

The previous prime is 1623720667997. The next prime is 1623720668047. The reversal of 1623720668046 is 6408660273261.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1623720668046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623720668047) 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, 4364840320 + ... + 4364840691.

It is an arithmetic number, because the mean of its divisors is an integer number (209512344288).

Almost surely, 2^{1623720668046} is an apocalyptic number.

1623720668046 is an abundant number, since it is smaller than the sum of its proper divisors (1728476840562).

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

1623720668046 is a wasteful number, since it uses less digits than its factorization.

1623720668046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8729681047.

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 1623720668046 in words is "one trillion, six hundred twenty-three billion, seven hundred twenty million, six hundred sixty-eight thousand, forty-six".