11156652640 has 192 divisors, whose sum is σ = 31754540160. Its totient is φ = 3622993920.

The previous prime is 11156652631. The next prime is 11156652653. The reversal of 11156652640 is 4625665111.

It is a self number, because there is not a number n which added to its sum of digits gives 11156652640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1718200 + ... + 1724680.

It is an arithmetic number, because the mean of its divisors is an integer number (165388230).

Almost surely, 2^11156652640 is an apocalyptic number.

11156652640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11156652640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15877270080).

11156652640 is an abundant number, since it is smaller than the sum of its proper divisors (20597887520).

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

11156652640 is a wasteful number, since it uses less digits than its factorization.

11156652640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585 (or 6577 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 11156652640 in words is "eleven billion, one hundred fifty-six million, six hundred fifty-two thousand, six hundred forty".