65131020602 has 8 divisors (see below), whose sum is σ = 103443385716. Its totient is φ = 30649892032.

The previous prime is 65131020601. The next prime is 65131020613. The reversal of 65131020602 is 20602013156.

It can be written as a sum of positive squares in 2 ways, for example, as 64847131801 + 283888801 = 254651^2 + 16849^2 .

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

It is not an unprimeable number, because it can be changed into a prime (65131020601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 957809093 + ... + 957809160.

Almost surely, 2^65131020602 is an apocalyptic number.

65131020602 is a deficient number, since it is larger than the sum of its proper divisors (38312365114).

65131020602 is a wasteful number, since it uses less digits than its factorization.

65131020602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915618272.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 65131020602 its reverse (20602013156), we get a palindrome (85733033758).

The spelling of 65131020602 in words is "sixty-five billion, one hundred thirty-one million, twenty thousand, six hundred two".