65138833834 has 4 divisors (see below), whose sum is σ = 97708250754. Its totient is φ = 32569416916.

The previous prime is 65138833817. The next prime is 65138833871. The reversal of 65138833834 is 43833883156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58344953209 + 6793880625 = 241547^2 + 82425^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16284708457 + ... + 16284708460.

Almost surely, 2^65138833834 is an apocalyptic number.

65138833834 is a deficient number, since it is larger than the sum of its proper divisors (32569416920).

65138833834 is a wasteful number, since it uses less digits than its factorization.

65138833834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32569416919.

The product of its digits is 4976640, while the sum is 52.

The spelling of 65138833834 in words is "sixty-five billion, one hundred thirty-eight million, eight hundred thirty-three thousand, eight hundred thirty-four".