1053664805623 has 4 divisors (see below), whose sum is σ = 1082142232840. Its totient is φ = 1025187378408.

The previous prime is 1053664805617. The next prime is 1053664805707. The reversal of 1053664805623 is 3265084663501.

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

It is not a de Polignac number, because 1053664805623 - 2⁵ = 1053664805591 is a prime.

It is a super-2 number, since 2×1053664805623² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053664805023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14238713553 + ... + 14238713626.

It is an arithmetic number, because the mean of its divisors is an integer number (270535558210).

Almost surely, 2^{1053664805623} is an apocalyptic number.

1053664805623 is a deficient number, since it is larger than the sum of its proper divisors (28477427217).

1053664805623 is an equidigital number, since it uses as much as digits as its factorization.

1053664805623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28477427216.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 1053664805623 in words is "one trillion, fifty-three billion, six hundred sixty-four million, eight hundred five thousand, six hundred twenty-three".