20323162436 has 6 divisors (see below), whose sum is σ = 35565534270. Its totient is φ = 10161581216.

The previous prime is 20323162423. The next prime is 20323162441. The reversal of 20323162436 is 63426132302.

It can be written as a sum of positive squares in only one way, i.e., 12677408836 + 7645753600 = 112594^2 + 87440^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2540395301 + ... + 2540395308.

It is an arithmetic number, because the mean of its divisors is an integer number (5927589045).

Almost surely, 2^20323162436 is an apocalyptic number.

It is an amenable number.

20323162436 is a deficient number, since it is larger than the sum of its proper divisors (15242371834).

20323162436 is a wasteful number, since it uses less digits than its factorization.

20323162436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080790613 (or 5080790611 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 20323162436 its reverse (63426132302), we get a palindrome (83749294738).

The spelling of 20323162436 in words is "twenty billion, three hundred twenty-three million, one hundred sixty-two thousand, four hundred thirty-six".