21114101545 has 16 divisors (see below), whose sum is σ = 26445180672. Its totient is φ = 16152811840.

The previous prime is 21114101527. The next prime is 21114101549. The reversal of 21114101545 is 54510141112.

It is a happy number.

It is not a de Polignac number, because 21114101545 - 2¹³ = 21114093353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21114101549) 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, 484059 + ... + 525871.

It is an arithmetic number, because the mean of its divisors is an integer number (1652823792).

Almost surely, 2^21114101545 is an apocalyptic number.

It is an amenable number.

21114101545 is a deficient number, since it is larger than the sum of its proper divisors (5331079127).

21114101545 is a wasteful number, since it uses less digits than its factorization.

21114101545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46232.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 21114101545 its reverse (54510141112), we get a palindrome (75624242657).

The spelling of 21114101545 in words is "twenty-one billion, one hundred fourteen million, one hundred one thousand, five hundred forty-five".