65618054357 has 4 divisors (see below), whose sum is σ = 66448662720. Its totient is φ = 64787445996.

The previous prime is 65618054323. The next prime is 65618054377. The reversal of 65618054357 is 75345081656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65618054357 - 2¹⁴ = 65618037973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65618054317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415304063 + ... + 415304220.

It is an arithmetic number, because the mean of its divisors is an integer number (16612165680).

Almost surely, 2^65618054357 is an apocalyptic number.

It is an amenable number.

65618054357 is a deficient number, since it is larger than the sum of its proper divisors (830608363).

65618054357 is an equidigital number, since it uses as much as digits as its factorization.

65618054357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830608362.

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 65618054357 in words is "sixty-five billion, six hundred eighteen million, fifty-four thousand, three hundred fifty-seven".