20128740596 has 12 divisors (see below), whose sum is σ = 35319736452. Its totient is φ = 10037387328.

The previous prime is 20128740589. The next prime is 20128740637. The reversal of 20128740596 is 69504782102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4644422500 + 15484318096 = 68150^2 + 124436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6744065 + ... + 6747048.

It is an arithmetic number, because the mean of its divisors is an integer number (2943311371).

Almost surely, 2^20128740596 is an apocalyptic number.

It is an amenable number.

20128740596 is a deficient number, since it is larger than the sum of its proper divisors (15190995856).

20128740596 is a wasteful number, since it uses less digits than its factorization.

20128740596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13491490 (or 13491488 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 20128740596 in words is "twenty billion, one hundred twenty-eight million, seven hundred forty thousand, five hundred ninety-six".