11511071004 has 48 divisors (see below), whose sum is σ = 28284157440. Its totient is φ = 3636515520.

The previous prime is 11511070973. The next prime is 11511071009. The reversal of 11511071004 is 40017011511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511071009) 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, 161232 + ... + 221399.

It is an arithmetic number, because the mean of its divisors is an integer number (589253280).

Almost surely, 2^11511071004 is an apocalyptic number.

It is an amenable number.

11511071004 is an abundant number, since it is smaller than the sum of its proper divisors (16773086436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11511071004 is a wasteful number, since it uses less digits than its factorization.

11511071004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382770 (or 382768 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 21.

Adding to 11511071004 its reverse (40017011511), we get a palindrome (51528082515).

The spelling of 11511071004 in words is "eleven billion, five hundred eleven million, seventy-one thousand, four".