21364123356061 has 8 divisors (see below), whose sum is σ = 21945249333504. Its totient is φ = 20783193022800.

The previous prime is 21364123356031. The next prime is 21364123356101. The reversal of 21364123356061 is 16065332146312.

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

It is a cyclic number.

It is not a de Polignac number, because 21364123356061 - 2¹⁵ = 21364123323293 is a prime.

It is a super-2 number, since 2×21364123356061² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21364123355999 and 21364123356017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21364123356031) 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, 48689665 + ... + 49126486.

It is an arithmetic number, because the mean of its divisors is an integer number (2743156166688).

Almost surely, 2^{21364123356061} is an apocalyptic number.

It is an amenable number.

21364123356061 is a deficient number, since it is larger than the sum of its proper divisors (581125977443).

21364123356061 is an equidigital number, since it uses as much as digits as its factorization.

21364123356061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97822091.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 21364123356061 in words is "twenty-one trillion, three hundred sixty-four billion, one hundred twenty-three million, three hundred fifty-six thousand, sixty-one".