21314541545 has 8 divisors (see below), whose sum is σ = 27902672640. Its totient is φ = 15501484720.

The previous prime is 21314541511. The next prime is 21314541557. The reversal of 21314541545 is 54514541312.

It is a happy number.

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

It is not a de Polignac number, because 21314541545 - 2¹⁰ = 21314540521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193768505 + ... + 193768614.

It is an arithmetic number, because the mean of its divisors is an integer number (3487834080).

Almost surely, 2^21314541545 is an apocalyptic number.

It is an amenable number.

21314541545 is a deficient number, since it is larger than the sum of its proper divisors (6588131095).

21314541545 is a wasteful number, since it uses less digits than its factorization.

21314541545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387537135.

The product of its digits is 48000, while the sum is 35.

The spelling of 21314541545 in words is "twenty-one billion, three hundred fourteen million, five hundred forty-one thousand, five hundred forty-five".