11640725465 has 16 divisors (see below), whose sum is σ = 14265235776. Its totient is φ = 9116452800.

The previous prime is 11640725461. The next prime is 11640725471. The reversal of 11640725465 is 56452704611.

It is not a de Polignac number, because 11640725465 - 2² = 11640725461 is a prime.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26087 + ... + 154796.

It is an arithmetic number, because the mean of its divisors is an integer number (891577236).

Almost surely, 2^11640725465 is an apocalyptic number.

It is an amenable number.

11640725465 is a deficient number, since it is larger than the sum of its proper divisors (2624510311).

11640725465 is a wasteful number, since it uses less digits than its factorization.

11640725465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181160.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 11640725465 in words is "eleven billion, six hundred forty million, seven hundred twenty-five thousand, four hundred sixty-five".