105355661512 has 32 divisors (see below), whose sum is σ = 200889876600. Its totient is φ = 51785971200.

The previous prime is 105355661497. The next prime is 105355661513. The reversal of 105355661512 is 215166553501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6278026756 + 99077634756 = 79234^2 + 314766^2 .

It is a super-2 number, since 2×105355661512² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105355661513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850164 + ... + 966172.

Almost surely, 2^105355661512 is an apocalyptic number.

It is an amenable number.

105355661512 is a deficient number, since it is larger than the sum of its proper divisors (95534215088).

105355661512 is a wasteful number, since it uses less digits than its factorization.

105355661512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117937 (or 117933 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 105355661512 in words is "one hundred five billion, three hundred fifty-five million, six hundred sixty-one thousand, five hundred twelve".