105047213187 has 32 divisors (see below), whose sum is σ = 160624594944. Its totient is φ = 59819940000.

The previous prime is 105047213177. The next prime is 105047213251. The reversal of 105047213187 is 781312740501.

It is a happy number.

It is not a de Polignac number, because 105047213187 - 2¹⁶ = 105047147651 is a prime.

It is a super-2 number, since 2×105047213187² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105047213107) 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, 18586312 + ... + 18591962.

It is an arithmetic number, because the mean of its divisors is an integer number (5019518592).

Almost surely, 2^105047213187 is an apocalyptic number.

105047213187 is a deficient number, since it is larger than the sum of its proper divisors (55577381757).

105047213187 is a wasteful number, since it uses less digits than its factorization.

105047213187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8559.

The product of its (nonzero) digits is 47040, while the sum is 39.

Adding to 105047213187 its reverse (781312740501), we get a palindrome (886359953688).

The spelling of 105047213187 in words is "one hundred five billion, forty-seven million, two hundred thirteen thousand, one hundred eighty-seven".