21263154053113 has 8 divisors (see below), whose sum is σ = 25357301728128. Its totient is φ = 17433144937824.

The previous prime is 21263154053107. The next prime is 21263154053129. The reversal of 21263154053113 is 31135045136212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21263154053113 - 2⁵ = 21263154053081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21263154083113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66034639756 + ... + 66034640077.

It is an arithmetic number, because the mean of its divisors is an integer number (3169662716016).

Almost surely, 2^{21263154053113} is an apocalyptic number.

21263154053113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21263154053113 is a deficient number, since it is larger than the sum of its proper divisors (4094147675015).

21263154053113 is a wasteful number, since it uses less digits than its factorization.

21263154053113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132069279863.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 21263154053113 its reverse (31135045136212), we get a palindrome (52398199189325).

The spelling of 21263154053113 in words is "twenty-one trillion, two hundred sixty-three billion, one hundred fifty-four million, fifty-three thousand, one hundred thirteen".