20315321426 has 16 divisors (see below), whose sum is σ = 30679387200. Its totient is φ = 10089072048.

The previous prime is 20315321413. The next prime is 20315321431. The reversal of 20315321426 is 62412351302.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138971 + ... + 244833.

It is an arithmetic number, because the mean of its divisors is an integer number (1917461700).

Almost surely, 2^20315321426 is an apocalyptic number.

20315321426 is a deficient number, since it is larger than the sum of its proper divisors (10364065774).

20315321426 is a wasteful number, since it uses less digits than its factorization.

20315321426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106513.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 20315321426 its reverse (62412351302), we get a palindrome (82727672728).

The spelling of 20315321426 in words is "twenty billion, three hundred fifteen million, three hundred twenty-one thousand, four hundred twenty-six".