44561021400 has 288 divisors, whose sum is σ = 178548282000. Its totient is φ = 10185315840.

The previous prime is 44561021387. The next prime is 44561021411. The reversal of 44561021400 is 412016544.

44561021400 is a `hidden beast` number, since 4 + 4 + 5 + 610 + 2 + 1 + 40 + 0 = 666.

It is a super-2 number, since 2×44561021400² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 180396 + ... + 348804.

Almost surely, 2^44561021400 is an apocalyptic number.

44561021400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44561021400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89274141000).

44561021400 is an abundant number, since it is smaller than the sum of its proper divisors (133987260600).

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

44561021400 is a wasteful number, since it uses less digits than its factorization.

44561021400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168448 (or 168426 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 44561021400 its reverse (412016544), we get a palindrome (44973037944).

The spelling of 44561021400 in words is "forty-four billion, five hundred sixty-one million, twenty-one thousand, four hundred".