20400040264444 has 12 divisors (see below), whose sum is σ = 35706742163568. Its totient is φ = 10198113932000.

The previous prime is 20400040264427. The next prime is 20400040264453. The reversal of 20400040264444 is 44446204000402.

It is a congruent number.

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, 476525977 + ... + 476568784.

It is an arithmetic number, because the mean of its divisors is an integer number (2975561846964).

Almost surely, 2^{20400040264444} is an apocalyptic number.

It is an amenable number.

20400040264444 is a deficient number, since it is larger than the sum of its proper divisors (15306701899124).

20400040264444 is a wasteful number, since it uses less digits than its factorization.

20400040264444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953100116 (or 953100114 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 20400040264444 its reverse (44446204000402), we get a palindrome (64846244264846).

The spelling of 20400040264444 in words is "twenty trillion, four hundred billion, forty million, two hundred sixty-four thousand, four hundred forty-four".