105449988545 has 32 divisors (see below), whose sum is σ = 142189876224. Its totient is φ = 74411064000.

The previous prime is 105449988541. The next prime is 105449988547. The reversal of 105449988545 is 545889944501.

It is not a de Polignac number, because 105449988545 - 2² = 105449988541 is a prime.

It is a super-2 number, since 2×105449988545² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105449988541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209474 + ... + 504756.

It is an arithmetic number, because the mean of its divisors is an integer number (4443433632).

Almost surely, 2^105449988545 is an apocalyptic number.

It is an amenable number.

105449988545 is a deficient number, since it is larger than the sum of its proper divisors (36739887679).

105449988545 is a wasteful number, since it uses less digits than its factorization.

105449988545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295493.

The product of its (nonzero) digits is 41472000, while the sum is 62.

The spelling of 105449988545 in words is "one hundred five billion, four hundred forty-nine million, nine hundred eighty-eight thousand, five hundred forty-five".