20395546505 has 16 divisors (see below), whose sum is σ = 25851707904. Its totient is φ = 15422883840.

The previous prime is 20395546499. The next prime is 20395546517. The reversal of 20395546505 is 50564559302.

It is not a de Polignac number, because 20395546505 - 2¹⁶ = 20395480969 is a prime.

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, 1523384 + ... + 1536713.

It is an arithmetic number, because the mean of its divisors is an integer number (1615731744).

Almost surely, 2^20395546505 is an apocalyptic number.

It is an amenable number.

20395546505 is a deficient number, since it is larger than the sum of its proper divisors (5456161399).

20395546505 is a wasteful number, since it uses less digits than its factorization.

20395546505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060176.

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 20395546505 in words is "twenty billion, three hundred ninety-five million, five hundred forty-six thousand, five hundred five".