20272349145 has 16 divisors (see below), whose sum is σ = 32437581120. Its totient is φ = 10811312064.

The previous prime is 20272349137. The next prime is 20272349177. The reversal of 20272349145 is 54194327202.

It is not a de Polignac number, because 20272349145 - 2³ = 20272349137 is a prime.

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, 403426 + ... + 450884.

It is an arithmetic number, because the mean of its divisors is an integer number (2027348820).

Almost surely, 2^20272349145 is an apocalyptic number.

It is an amenable number.

20272349145 is a deficient number, since it is larger than the sum of its proper divisors (12165231975).

20272349145 is a wasteful number, since it uses less digits than its factorization.

20272349145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75944.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 20272349145 in words is "twenty billion, two hundred seventy-two million, three hundred forty-nine thousand, one hundred forty-five".