21500032414245 has 64 divisors (see below), whose sum is σ = 43615298119680. Its totient is φ = 8783636371200.

The previous prime is 21500032414177. The next prime is 21500032414279. The reversal of 21500032414245 is 54241423000512.

It is not a de Polignac number, because 21500032414245 - 2¹² = 21500032410149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 157683946 + ... + 157820235.

It is an arithmetic number, because the mean of its divisors is an integer number (681489033120).

Almost surely, 2^{21500032414245} is an apocalyptic number.

It is an amenable number.

21500032414245 is an abundant number, since it is smaller than the sum of its proper divisors (22115265705435).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21500032414245 is a wasteful number, since it uses less digits than its factorization.

21500032414245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315504266.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 21500032414245 its reverse (54241423000512), we get a palindrome (75741455414757).

The spelling of 21500032414245 in words is "twenty-one trillion, five hundred billion, thirty-two million, four hundred fourteen thousand, two hundred forty-five".