11520321455601 has 24 divisors (see below), whose sum is σ = 19034025890880. Its totient is φ = 6577380393696.

The previous prime is 11520321455579. The next prime is 11520321455659. The reversal of 11520321455601 is 10655412302511.

11520321455601 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 0 + 3 + 2 + 1 + 45 + 5 + 601 = 666.

It is not a de Polignac number, because 11520321455601 - 2¹⁸ = 11520321193457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11520321455801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78543346 + ... + 78689883.

It is an arithmetic number, because the mean of its divisors is an integer number (793084412120).

Almost surely, 2^{11520321455601} is an apocalyptic number.

It is an amenable number.

11520321455601 is a deficient number, since it is larger than the sum of its proper divisors (7513704435279).

11520321455601 is a wasteful number, since it uses less digits than its factorization.

11520321455601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157234405 (or 157234402 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 11520321455601 in words is "eleven trillion, five hundred twenty billion, three hundred twenty-one million, four hundred fifty-five thousand, six hundred one".