20552893145 has 8 divisors (see below), whose sum is σ = 24665981640. Its totient is φ = 16440641280.

The previous prime is 20552893129. The next prime is 20552893171. The reversal of 20552893145 is 54139825502.

It can be written as a sum of positive squares in 4 ways, for example, as 200732224 + 20352160921 = 14168^2 + 142661^2 .

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

It is not a de Polignac number, because 20552893145 - 2⁴ = 20552893129 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20552893096 and 20552893105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153776 + ... + 254465.

It is an arithmetic number, because the mean of its divisors is an integer number (3083247705).

Almost surely, 2^20552893145 is an apocalyptic number.

It is an amenable number.

20552893145 is a deficient number, since it is larger than the sum of its proper divisors (4113088495).

20552893145 is a wasteful number, since it uses less digits than its factorization.

20552893145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418315.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 20552893145 in words is "twenty billion, five hundred fifty-two million, eight hundred ninety-three thousand, one hundred forty-five".