20545934258 has 8 divisors (see below), whose sum is σ = 30821973228. Its totient is φ = 10271943184.

The previous prime is 20545934219. The next prime is 20545934267. The reversal of 20545934258 is 85243954502.

It can be written as a sum of positive squares in 2 ways, for example, as 18304195849 + 2241738409 = 135293^2 + 47347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486641 + ... + 527172.

Almost surely, 2^20545934258 is an apocalyptic number.

20545934258 is a deficient number, since it is larger than the sum of its proper divisors (10276038970).

20545934258 is a wasteful number, since it uses less digits than its factorization.

20545934258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023948.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 20545934258 in words is "twenty billion, five hundred forty-five million, nine hundred thirty-four thousand, two hundred fifty-eight".