20400154222044 has 48 divisors (see below), whose sum is σ = 50105991689600. Its totient is φ = 6442108998336.

The previous prime is 20400154221991. The next prime is 20400154222051. The reversal of 20400154222044 is 44022245100402.

It is a super-3 number, since 3×20400154222044³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50556174 + ... + 50958090.

Almost surely, 2^{20400154222044} is an apocalyptic number.

It is an amenable number.

20400154222044 is an abundant number, since it is smaller than the sum of its proper divisors (29705837467556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20400154222044 is a wasteful number, since it uses less digits than its factorization.

20400154222044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624562 (or 624560 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

Adding to 20400154222044 its reverse (44022245100402), we get a palindrome (64422399322446).

The spelling of 20400154222044 in words is "twenty trillion, four hundred billion, one hundred fifty-four million, two hundred twenty-two thousand, forty-four".