65555667157 has 8 divisors (see below), whose sum is σ = 67273547616. Its totient is φ = 63846574512.

The previous prime is 65555667139. The next prime is 65555667173. The reversal of 65555667157 is 75176655556.

65555667157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65555667157 - 2⁷ = 65555667029 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 (65555667197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181838 + ... + 2211679.

It is an arithmetic number, because the mean of its divisors is an integer number (8409193452).

Almost surely, 2^65555667157 is an apocalyptic number.

It is an amenable number.

65555667157 is a deficient number, since it is larger than the sum of its proper divisors (1717880459).

65555667157 is a wasteful number, since it uses less digits than its factorization.

65555667157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4393907.

The product of its digits is 33075000, while the sum is 58.

The spelling of 65555667157 in words is "sixty-five billion, five hundred fifty-five million, six hundred sixty-seven thousand, one hundred fifty-seven".