20395949758 has 16 divisors (see below), whose sum is σ = 31065127776. Its totient is φ = 10041280480.

The previous prime is 20395949747. The next prime is 20395949789. The reversal of 20395949758 is 85794959302.

It is a junction number, because it is equal to n+sod(n) for n = 20395949696 and 20395949705.

It is a congruent number.

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, 16860 + ... + 202672.

It is an arithmetic number, because the mean of its divisors is an integer number (1941570486).

Almost surely, 2^20395949758 is an apocalyptic number.

20395949758 is a deficient number, since it is larger than the sum of its proper divisors (10669178018).

20395949758 is a wasteful number, since it uses less digits than its factorization.

20395949758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186659.

The product of its (nonzero) digits is 24494400, while the sum is 61.

The spelling of 20395949758 in words is "twenty billion, three hundred ninety-five million, nine hundred forty-nine thousand, seven hundred fifty-eight".