53325143721 has 16 divisors (see below), whose sum is σ = 79004224320. Its totient is φ = 35548290720.

The previous prime is 53325143699. The next prime is 53325143741. The reversal of 53325143721 is 12734152335.

53325143721 is a `hidden beast` number, since 5 + 33 + 251 + 4 + 372 + 1 = 666.

It is not a de Polignac number, because 53325143721 - 2¹¹ = 53325141673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53325143741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690186 + ... + 763548.

It is an arithmetic number, because the mean of its divisors is an integer number (4937764020).

Almost surely, 2^53325143721 is an apocalyptic number.

It is an amenable number.

53325143721 is a deficient number, since it is larger than the sum of its proper divisors (25679080599).

53325143721 is a wasteful number, since it uses less digits than its factorization.

53325143721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100293 (or 100287 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The spelling of 53325143721 in words is "fifty-three billion, three hundred twenty-five million, one hundred forty-three thousand, seven hundred twenty-one".