20248976945 has 16 divisors (see below), whose sum is σ = 24494987088. Its totient is φ = 16068864000.

The previous prime is 20248976873. The next prime is 20248976971. The reversal of 20248976945 is 54967984202.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 885419536 + 19363557409 = 29756^2 + 139153^2 .

It is not a de Polignac number, because 20248976945 - 2¹⁶ = 20248911409 is a prime.

It is a Duffinian 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, 301445 + ... + 362445.

It is an arithmetic number, because the mean of its divisors is an integer number (1530936693).

Almost surely, 2^20248976945 is an apocalyptic number.

It is an amenable number.

20248976945 is a deficient number, since it is larger than the sum of its proper divisors (4246010143).

20248976945 is a wasteful number, since it uses less digits than its factorization.

20248976945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61540.

The product of its (nonzero) digits is 8709120, while the sum is 56.

The spelling of 20248976945 in words is "twenty billion, two hundred forty-eight million, nine hundred seventy-six thousand, nine hundred forty-five".