1400440205023 has 4 divisors (see below), whose sum is σ = 1433008581928. Its totient is φ = 1367871828120.

The previous prime is 1400440204991. The next prime is 1400440205111. The reversal of 1400440205023 is 3205020440041.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1400440205023 - 2⁵ = 1400440204991 is a prime.

It is a super-4 number, since 4×1400440205023⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400440208023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16284188388 + ... + 16284188473.

It is an arithmetic number, because the mean of its divisors is an integer number (358252145482).

Almost surely, 2^{1400440205023} is an apocalyptic number.

1400440205023 is a deficient number, since it is larger than the sum of its proper divisors (32568376905).

1400440205023 is an equidigital number, since it uses as much as digits as its factorization.

1400440205023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32568376904.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 1400440205023 its reverse (3205020440041), we get a palindrome (4605460645064).

The spelling of 1400440205023 in words is "one trillion, four hundred billion, four hundred forty million, two hundred five thousand, twenty-three".