151111151111 has 16 divisors (see below), whose sum is σ = 153876129408. Its totient is φ = 148373280000.

The previous prime is 151111151083. The next prime is 151111151117. The reversal of 151111151111 is 111151111151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151111151111 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 (151111151117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15257261 + ... + 15267161.

It is an arithmetic number, because the mean of its divisors is an integer number (9617258088).

Almost surely, 2^151111151111 is an apocalyptic number.

151111151111 is a deficient number, since it is larger than the sum of its proper divisors (2764978297).

151111151111 is a wasteful number, since it uses less digits than its factorization.

151111151111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11242.

The product of its digits is 25, while the sum is 20.

Adding to 151111151111 its reverse (111151111151), we get a palindrome (262262262262).

It can be divided in two parts, 151111151 and 111, that multiplied together give a palindrome (16773337761).

The spelling of 151111151111 in words is "one hundred fifty-one billion, one hundred eleven million, one hundred fifty-one thousand, one hundred eleven".