101440023444 has 72 divisors (see below), whose sum is σ = 262611629280. Its totient is φ = 33005044800.

The previous prime is 101440023427. The next prime is 101440023463. The reversal of 101440023444 is 444320044101.

101440023444 is a `hidden beast` number, since 10 + 14 + 400 + 234 + 4 + 4 = 666.

It is a super-2 number, since 2×101440023444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111367 + ... + 463985.

It is an arithmetic number, because the mean of its divisors is an integer number (3647383740).

Almost surely, 2^101440023444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101440023444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131305814640).

101440023444 is an abundant number, since it is smaller than the sum of its proper divisors (161171605836).

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

101440023444 is a wasteful number, since it uses less digits than its factorization.

101440023444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352821 (or 352816 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 101440023444 its reverse (444320044101), we get a palindrome (545760067545).

The spelling of 101440023444 in words is "one hundred one billion, four hundred forty million, twenty-three thousand, four hundred forty-four".