21115346255326 has 16 divisors (see below), whose sum is σ = 31834085887296. Its totient is φ = 10503985268896.

The previous prime is 21115346255323. The next prime is 21115346255329. The reversal of 21115346255326 is 62355264351112.

It is an interprime number because it is at equal distance from previous prime (21115346255323) and next prime (21115346255329).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21115346255321) 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, 65683755 + ... + 66004441.

It is an arithmetic number, because the mean of its divisors is an integer number (1989630367956).

Almost surely, 2^{21115346255326} is an apocalyptic number.

21115346255326 is a deficient number, since it is larger than the sum of its proper divisors (10718739631970).

21115346255326 is a wasteful number, since it uses less digits than its factorization.

21115346255326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488003.

The product of its digits is 1296000, while the sum is 46.

The spelling of 21115346255326 in words is "twenty-one trillion, one hundred fifteen billion, three hundred forty-six million, two hundred fifty-five thousand, three hundred twenty-six".