11521777072 has 40 divisors (see below), whose sum is σ = 24599734544. Its totient is φ = 5194070784.

The previous prime is 11521777049. The next prime is 11521777117. The reversal of 11521777072 is 27077712511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635163 + ... + 653050.

Almost surely, 2^11521777072 is an apocalyptic number.

It is an amenable number.

11521777072 is an abundant number, since it is smaller than the sum of its proper divisors (13077957472).

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

11521777072 is a wasteful number, since it uses less digits than its factorization.

11521777072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288277 (or 1288271 counting only the distinct ones).

The product of its (nonzero) digits is 48020, while the sum is 40.

The spelling of 11521777072 in words is "eleven billion, five hundred twenty-one million, seven hundred seventy-seven thousand, seventy-two".