11502905649 has 8 divisors (see below), whose sum is σ = 15338188320. Its totient is φ = 7668113376.

The previous prime is 11502905647. The next prime is 11502905657. The reversal of 11502905649 is 94650920511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11502905649 - 2¹ = 11502905647 is a prime.

It is a super-2 number, since 2×11502905649² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11502905649.

It is not an unprimeable number, because it can be changed into a prime (11502905647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63844 + ... + 164565.

It is an arithmetic number, because the mean of its divisors is an integer number (1917273540).

Almost surely, 2^11502905649 is an apocalyptic number.

It is an amenable number.

11502905649 is a deficient number, since it is larger than the sum of its proper divisors (3835282671).

11502905649 is a wasteful number, since it uses less digits than its factorization.

11502905649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245199.

The product of its (nonzero) digits is 97200, while the sum is 42.

The spelling of 11502905649 in words is "eleven billion, five hundred two million, nine hundred five thousand, six hundred forty-nine".