21213545032459 has 8 divisors (see below), whose sum is σ = 23219870225552. Its totient is φ = 19260721844640.

The previous prime is 21213545032423. The next prime is 21213545032483. The reversal of 21213545032459 is 95423054531212.

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 21213545032459 - 2²³ = 21213536643851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21213545032859) 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, 13375500489 + ... + 13375502074.

It is an arithmetic number, because the mean of its divisors is an integer number (2902483778194).

Almost surely, 2^{21213545032459} is an apocalyptic number.

21213545032459 is a deficient number, since it is larger than the sum of its proper divisors (2006325193093).

21213545032459 is a wasteful number, since it uses less digits than its factorization.

21213545032459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26751002637.

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

The spelling of 21213545032459 in words is "twenty-one trillion, two hundred thirteen billion, five hundred forty-five million, thirty-two thousand, four hundred fifty-nine".