181125768351 has 32 divisors (see below), whose sum is σ = 276412594176. Its totient is φ = 104490576000.

The previous prime is 181125768349. The next prime is 181125768367. The reversal of 181125768351 is 153867521181.

It is a happy number.

It is not a de Polignac number, because 181125768351 - 2¹ = 181125768349 is a prime.

It is a super-2 number, since 2×181125768351² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 181125768351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181125768851) 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, 1388856 + ... + 1513661.

It is an arithmetic number, because the mean of its divisors is an integer number (8637893568).

Almost surely, 2^181125768351 is an apocalyptic number.

181125768351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

181125768351 is a deficient number, since it is larger than the sum of its proper divisors (95286825825).

181125768351 is a wasteful number, since it uses less digits than its factorization.

181125768351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902623.

The product of its digits is 403200, while the sum is 48.

The spelling of 181125768351 in words is "one hundred eighty-one billion, one hundred twenty-five million, seven hundred sixty-eight thousand, three hundred fifty-one".