101243512533440 has 224 divisors, whose sum is σ = 254300521420800. Its totient is φ = 38317911515136.

The previous prime is 101243512533431. The next prime is 101243512533451. The reversal of 101243512533440 is 44335215342101.

It is a junction number, because it is equal to n+sod(n) for n = 101243512533394 and 101243512533403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285177161 + ... + 285531959.

Almost surely, 2^{101243512533440} is an apocalyptic number.

101243512533440 is a gapful number since it is divisible by the number (10) 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 101243512533440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127150260710400).

101243512533440 is an abundant number, since it is smaller than the sum of its proper divisors (153057008887360).

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

101243512533440 is a wasteful number, since it uses less digits than its factorization.

101243512533440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355259 (or 355249 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 101243512533440 its reverse (44335215342101), we get a palindrome (145578727875541).

The spelling of 101243512533440 in words is "one hundred one trillion, two hundred forty-three billion, five hundred twelve million, five hundred thirty-three thousand, four hundred forty".