105521413412440 has 32 divisors (see below), whose sum is σ = 237550758626160. Its totient is φ = 42185884752000.

The previous prime is 105521413412431. The next prime is 105521413412489. The reversal of 105521413412440 is 44214314125501.

It is a super-2 number, since 2×105521413412440² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105521413412440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708693786 + ... + 708842665.

Almost surely, 2^{105521413412440} is an apocalyptic number.

105521413412440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105521413412440 is an abundant number, since it is smaller than the sum of its proper divisors (132029345213720).

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

105521413412440 is a wasteful number, since it uses less digits than its factorization.

105521413412440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417538323 (or 1417538319 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 105521413412440 its reverse (44214314125501), we get a palindrome (149735727537941).

The spelling of 105521413412440 in words is "one hundred five trillion, five hundred twenty-one billion, four hundred thirteen million, four hundred twelve thousand, four hundred forty".