20545127605 has 16 divisors (see below), whose sum is σ = 24924184704. Its totient is φ = 16256420800.

The previous prime is 20545127597. The next prime is 20545127651. The reversal of 20545127605 is 50672154502.

It is not a de Polignac number, because 20545127605 - 2³ = 20545127597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475722 + ... + 517108.

It is an arithmetic number, because the mean of its divisors is an integer number (1557761544).

Almost surely, 2^20545127605 is an apocalyptic number.

It is an amenable number.

20545127605 is a deficient number, since it is larger than the sum of its proper divisors (4379057099).

20545127605 is a wasteful number, since it uses less digits than its factorization.

20545127605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42476.

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 20545127605 in words is "twenty billion, five hundred forty-five million, one hundred twenty-seven thousand, six hundred five".