7111252861 has 32 divisors (see below), whose sum is σ = 7686144000. Its totient is φ = 6564317760.

The previous prime is 7111252853. The next prime is 7111252867. The reversal of 7111252861 is 1682521117.

It is not a de Polignac number, because 7111252861 - 2³ = 7111252853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7111252867) 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, 25672255 + ... + 25672531.

It is an arithmetic number, because the mean of its divisors is an integer number (240192000).

Almost surely, 2^7111252861 is an apocalyptic number.

7111252861 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7111252861 is a deficient number, since it is larger than the sum of its proper divisors (574891139).

7111252861 is a wasteful number, since it uses less digits than its factorization.

7111252861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649.

The product of its digits is 6720, while the sum is 34.

The square root of 7111252861 is about 84328.2447404190. The cubic root of 7111252861 is about 1923.0122044114.

Adding to 7111252861 its reverse (1682521117), we get a palindrome (8793773978).

The spelling of 7111252861 in words is "seven billion, one hundred eleven million, two hundred fifty-two thousand, eight hundred sixty-one".