105111061061 has 4 divisors (see below), whose sum is σ = 105112195872. Its totient is φ = 105109926252.

The previous prime is 105111061039. The next prime is 105111061073. The reversal of 105111061061 is 160160111501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105111061061 - 2¹⁸ = 105110798917 is a prime.

It is a super-2 number, since 2×105111061061² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105111061001) 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, 414785 + ... + 618278.

It is an arithmetic number, because the mean of its divisors is an integer number (26278048968).

Almost surely, 2^105111061061 is an apocalyptic number.

It is an amenable number.

105111061061 is a deficient number, since it is larger than the sum of its proper divisors (1134811).

105111061061 is a wasteful number, since it uses less digits than its factorization.

105111061061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134810.

The product of its (nonzero) digits is 180, while the sum is 23.

Adding to 105111061061 its reverse (160160111501), we get a palindrome (265271172562).

The spelling of 105111061061 in words is "one hundred five billion, one hundred eleven million, sixty-one thousand, sixty-one".