21356327130773 has 16 divisors (see below), whose sum is σ = 21585337449984. Its totient is φ = 21127668513600.

The previous prime is 21356327130709. The next prime is 21356327130883. The reversal of 21356327130773 is 37703172365312.

It is a cyclic number.

It is not a de Polignac number, because 21356327130773 - 2⁶ = 21356327130709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21356327130373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676952786 + ... + 676984332.

It is an arithmetic number, because the mean of its divisors is an integer number (1349083590624).

Almost surely, 2^{21356327130773} is an apocalyptic number.

It is an amenable number.

21356327130773 is a deficient number, since it is larger than the sum of its proper divisors (229010319211).

21356327130773 is a wasteful number, since it uses less digits than its factorization.

21356327130773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36892.

The product of its (nonzero) digits is 3333960, while the sum is 50.

The spelling of 21356327130773 in words is "twenty-one trillion, three hundred fifty-six billion, three hundred twenty-seven million, one hundred thirty thousand, seven hundred seventy-three".