21146542110045 has 32 divisors (see below), whose sum is σ = 41011475610240. Its totient is φ = 10252868901120.

The previous prime is 21146542110019. The next prime is 21146542110059. The reversal of 21146542110045 is 54001124564112.

21146542110045 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 6 + 542 + 1 + 100 + 4 + 5 = 666.

It is not a de Polignac number, because 21146542110045 - 2²⁹ = 21146005239133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21146542109991 and 21146542110009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7120046364 + ... + 7120049333.

It is an arithmetic number, because the mean of its divisors is an integer number (1281608612820).

Almost surely, 2^{21146542110045} is an apocalyptic number.

It is an amenable number.

21146542110045 is a deficient number, since it is larger than the sum of its proper divisors (19864933500195).

21146542110045 is a wasteful number, since it uses less digits than its factorization.

21146542110045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14240095722 (or 14240095716 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

Adding to 21146542110045 its reverse (54001124564112), we get a palindrome (75147666674157).

The spelling of 21146542110045 in words is "twenty-one trillion, one hundred forty-six billion, five hundred forty-two million, one hundred ten thousand, forty-five".