7105164921 has 12 divisors (see below), whose sum is σ = 10286188848. Its totient is φ = 4726081464.

The previous prime is 7105164851. The next prime is 7105164949. The reversal of 7105164921 is 1294615017.

7105164921 is a `hidden beast` number, since 7 + 1 + 0 + 5 + 1 + 649 + 2 + 1 = 666.

It is not a de Polignac number, because 7105164921 - 2¹⁴ = 7105148537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7105164821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 887055 + ... + 895028.

It is an arithmetic number, because the mean of its divisors is an integer number (857182404).

Almost surely, 2^7105164921 is an apocalyptic number.

It is an amenable number.

7105164921 is a deficient number, since it is larger than the sum of its proper divisors (3181023927).

7105164921 is a wasteful number, since it uses less digits than its factorization.

7105164921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782532 (or 1782529 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 7105164921 is about 84292.1403275537. The cubic root of 7105164921 is about 1922.4632844777.

Adding to 7105164921 its reverse (1294615017), we get a palindrome (8399779938).

The spelling of 7105164921 in words is "seven billion, one hundred five million, one hundred sixty-four thousand, nine hundred twenty-one".