20606011545 has 32 divisors (see below), whose sum is σ = 37685007360. Its totient is φ = 9418530240.

The previous prime is 20606011541. The next prime is 20606011577. The reversal of 20606011545 is 54511060602.

It is not a de Polignac number, because 20606011545 - 2² = 20606011541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20606011541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1252986 + ... + 1269324.

It is an arithmetic number, because the mean of its divisors is an integer number (1177656480).

Almost surely, 2^20606011545 is an apocalyptic number.

It is an amenable number.

20606011545 is a deficient number, since it is larger than the sum of its proper divisors (17078995815).

20606011545 is a wasteful number, since it uses less digits than its factorization.

20606011545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28365.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 20606011545 in words is "twenty billion, six hundred six million, eleven thousand, five hundred forty-five".