20858678045 has 16 divisors (see below), whose sum is σ = 25710870528. Its totient is φ = 16235525760.

The previous prime is 20858678033. The next prime is 20858678083. The reversal of 20858678045 is 54087685802.

It is not a de Polignac number, because 20858678045 - 2⁶ = 20858677981 is a prime.

It is a Duffinian number.

It is a congruent 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, 63389 + ... + 213858.

It is an arithmetic number, because the mean of its divisors is an integer number (1606929408).

Almost surely, 2^20858678045 is an apocalyptic number.

It is an amenable number.

20858678045 is a deficient number, since it is larger than the sum of its proper divisors (4852192483).

20858678045 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 20858678045 = (58750248068)₉.

20858678045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277660.

The product of its (nonzero) digits is 4300800, while the sum is 53.

The spelling of 20858678045 in words is "twenty billion, eight hundred fifty-eight million, six hundred seventy-eight thousand, forty-five".