20205601396 has 12 divisors (see below), whose sum is σ = 37439790948. Its totient is φ = 9508518272.

The previous prime is 20205601331. The next prime is 20205601397. The reversal of 20205601396 is 69310650202.

It can be written as a sum of positive squares in 2 ways, for example, as 11780931600 + 8424669796 = 108540^2 + 91786^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20205601397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148570531 + ... + 148570666.

It is an arithmetic number, because the mean of its divisors is an integer number (3119982579).

Almost surely, 2^20205601396 is an apocalyptic number.

It is an amenable number.

20205601396 is a deficient number, since it is larger than the sum of its proper divisors (17234189552).

20205601396 is a wasteful number, since it uses less digits than its factorization.

20205601396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297141218 (or 297141216 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 20205601396 in words is "twenty billion, two hundred five million, six hundred one thousand, three hundred ninety-six".