105516371440 has 20 divisors (see below), whose sum is σ = 245325563784. Its totient is φ = 42206548544.

The previous prime is 105516371419. The next prime is 105516371447. The reversal of 105516371440 is 44173615501.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×105516371440² (a number of 23 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 105516371440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105516371447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659477242 + ... + 659477401.

Almost surely, 2^105516371440 is an apocalyptic number.

105516371440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105516371440 is an abundant number, since it is smaller than the sum of its proper divisors (139809192344).

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

105516371440 is a wasteful number, since it uses less digits than its factorization.

105516371440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318954656 (or 1318954650 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

Adding to 105516371440 its reverse (44173615501), we get a palindrome (149689986941).

The spelling of 105516371440 in words is "one hundred five billion, five hundred sixteen million, three hundred seventy-one thousand, four hundred forty".