20588346545 has 16 divisors (see below), whose sum is σ = 26691509712. Its totient is φ = 15155112960.

The previous prime is 20588346511. The next prime is 20588346577. The reversal of 20588346545 is 54564388502.

It can be written as a sum of positive squares in 8 ways, for example, as 1465052176 + 19123294369 = 38276^2 + 138287^2 .

It is not a de Polignac number, because 20588346545 - 2²⁴ = 20571569329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20588346493 and 20588346502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 485636 + ... + 526325.

It is an arithmetic number, because the mean of its divisors is an integer number (1668219357).

Almost surely, 2^20588346545 is an apocalyptic number.

It is an amenable number.

20588346545 is a deficient number, since it is larger than the sum of its proper divisors (6103163167).

20588346545 is a wasteful number, since it uses less digits than its factorization.

20588346545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012292.

The product of its (nonzero) digits is 4608000, while the sum is 50.

The spelling of 20588346545 in words is "twenty billion, five hundred eighty-eight million, three hundred forty-six thousand, five hundred forty-five".