20041620458 has 16 divisors (see below), whose sum is σ = 30628980360. Its totient is φ = 9833354496.

The previous prime is 20041620457. The next prime is 20041620493. The reversal of 20041620458 is 85402614002.

It can be written as a sum of positive squares in 4 ways, for example, as 18092133049 + 1949487409 = 134507^2 + 44153^2 .

It is not an unprimeable number, because it can be changed into a prime (20041620457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319643 + ... + 377166.

Almost surely, 2^20041620458 is an apocalyptic number.

20041620458 is a deficient number, since it is larger than the sum of its proper divisors (10587359902).

20041620458 is a wasteful number, since it uses less digits than its factorization.

20041620458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697081.

The product of its (nonzero) digits is 15360, while the sum is 32.

The spelling of 20041620458 in words is "twenty billion, forty-one million, six hundred twenty thousand, four hundred fifty-eight".