11640725464 has 8 divisors (see below), whose sum is σ = 21826360260. Its totient is φ = 5820362728.

The previous prime is 11640725461. The next prime is 11640725471. The reversal of 11640725464 is 46452704611.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640725461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727545334 + ... + 727545349.

Almost surely, 2^11640725464 is an apocalyptic number.

It is an amenable number.

11640725464 is a deficient number, since it is larger than the sum of its proper divisors (10185634796).

11640725464 is a wasteful number, since it uses less digits than its factorization.

11640725464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455090689 (or 1455090685 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 11640725464 in words is "eleven billion, six hundred forty million, seven hundred twenty-five thousand, four hundred sixty-four".