11513511412 has 12 divisors (see below), whose sum is σ = 21698540836. Its totient is φ = 5313928320.

The previous prime is 11513511403. The next prime is 11513511421. The reversal of 11513511412 is 21411531511.

It is an interprime number because it is at equal distance from previous prime (11513511403) and next prime (11513511421).

It can be written as a sum of positive squares in 2 ways, for example, as 1568635236 + 9944876176 = 39606^2 + 99724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110706789 + ... + 110706892.

Almost surely, 2^11513511412 is an apocalyptic number.

It is an amenable number.

11513511412 is a deficient number, since it is larger than the sum of its proper divisors (10185029424).

11513511412 is a wasteful number, since it uses less digits than its factorization.

11513511412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221413698 (or 221413696 counting only the distinct ones).

The product of its digits is 600, while the sum is 25.

The spelling of 11513511412 in words is "eleven billion, five hundred thirteen million, five hundred eleven thousand, four hundred twelve".