20548019705 has 16 divisors (see below), whose sum is σ = 25254457344. Its totient is φ = 16043776320.

The previous prime is 20548019693. The next prime is 20548019719. The reversal of 20548019705 is 50791084502.

It is not a de Polignac number, because 20548019705 - 2²⁰ = 20546971129 is a prime.

It is a super-2 number, since 2×20548019705² (a number of 21 digits) contains 22 as substring.

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, 152369 + ... + 253598.

It is an arithmetic number, because the mean of its divisors is an integer number (1578403584).

Almost surely, 2^20548019705 is an apocalyptic number.

It is an amenable number.

20548019705 is a deficient number, since it is larger than the sum of its proper divisors (4706437639).

20548019705 is a wasteful number, since it uses less digits than its factorization.

20548019705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406216.

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 20548019705 in words is "twenty billion, five hundred forty-eight million, nineteen thousand, seven hundred five".