65857342705 has 32 divisors (see below), whose sum is σ = 98674080768. Its totient is φ = 40993656000.

The previous prime is 65857342657. The next prime is 65857342723. The reversal of 65857342705 is 50724375856.

It is a happy number.

It is not a de Polignac number, because 65857342705 - 2¹³ = 65857334513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137730 + ... + 388180.

It is an arithmetic number, because the mean of its divisors is an integer number (3083565024).

Almost surely, 2^65857342705 is an apocalyptic number.

It is an amenable number.

65857342705 is a deficient number, since it is larger than the sum of its proper divisors (32816738063).

65857342705 is a wasteful number, since it uses less digits than its factorization.

65857342705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251157.

The product of its (nonzero) digits is 7056000, while the sum is 52.

The spelling of 65857342705 in words is "sixty-five billion, eight hundred fifty-seven million, three hundred forty-two thousand, seven hundred five".