20401133344 has 24 divisors (see below), whose sum is σ = 40233192048. Its totient is φ = 10183179840.

The previous prime is 20401133317. The next prime is 20401133381. The reversal of 20401133344 is 44333110402.

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, 524262 + ... + 561829.

It is an arithmetic number, because the mean of its divisors is an integer number (1676383002).

Almost surely, 2^20401133344 is an apocalyptic number.

It is an amenable number.

20401133344 is a deficient number, since it is larger than the sum of its proper divisors (19832058704).

20401133344 is a wasteful number, since it uses less digits than its factorization.

20401133344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086688 (or 1086680 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20401133344 its reverse (44333110402), we get a palindrome (64734243746).

The spelling of 20401133344 in words is "twenty billion, four hundred one million, one hundred thirty-three thousand, three hundred forty-four".