20401145422 has 16 divisors (see below), whose sum is σ = 34976103552. Its totient is φ = 8742670200.

The previous prime is 20401145407. The next prime is 20401145459. The reversal of 20401145422 is 22454110402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158853 + ... + 256975.

It is an arithmetic number, because the mean of its divisors is an integer number (2186006472).

Almost surely, 2^20401145422 is an apocalyptic number.

20401145422 is a deficient number, since it is larger than the sum of its proper divisors (14574958130).

20401145422 is a wasteful number, since it uses less digits than its factorization.

20401145422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112983.

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 20401145422 its reverse (22454110402), we get a palindrome (42855255824).

The spelling of 20401145422 in words is "twenty billion, four hundred one million, one hundred forty-five thousand, four hundred twenty-two".