65157051205 has 8 divisors (see below), whose sum is σ = 78686478072. Its totient is φ = 51793629888.

The previous prime is 65157051199. The next prime is 65157051209. The reversal of 65157051205 is 50215075156.

It can be written as a sum of positive squares in 4 ways, for example, as 6112425124 + 59044626081 = 78182^2 + 242991^2 .

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 65157051205 - 2¹⁹ = 65156526917 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 (65157051209) 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, 41500522 + ... + 41502091.

It is an arithmetic number, because the mean of its divisors is an integer number (9835809759).

Almost surely, 2^65157051205 is an apocalyptic number.

It is an amenable number.

65157051205 is a deficient number, since it is larger than the sum of its proper divisors (13529426867).

65157051205 is a wasteful number, since it uses less digits than its factorization.

65157051205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83002775.

The product of its (nonzero) digits is 52500, while the sum is 37.

The spelling of 65157051205 in words is "sixty-five billion, one hundred fifty-seven million, fifty-one thousand, two hundred five".