21375061250363 has 16 divisors (see below), whose sum is σ = 22703886499680. Its totient is φ = 20054231963136.

The previous prime is 21375061250297. The next prime is 21375061250383. The reversal of 21375061250363 is 36305216057312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21375061250363 - 2¹⁸ = 21375060988219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21375061250383) 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, 11596181 + ... + 13312457.

It is an arithmetic number, because the mean of its divisors is an integer number (1418992906230).

Almost surely, 2^{21375061250363} is an apocalyptic number.

21375061250363 is a deficient number, since it is larger than the sum of its proper divisors (1328825249317).

21375061250363 is a wasteful number, since it uses less digits than its factorization.

21375061250363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718606.

The product of its (nonzero) digits is 680400, while the sum is 44.

The spelling of 21375061250363 in words is "twenty-one trillion, three hundred seventy-five billion, sixty-one million, two hundred fifty thousand, three hundred sixty-three".