65420433194 has 4 divisors (see below), whose sum is σ = 98130649794. Its totient is φ = 32710216596.

The previous prime is 65420433193. The next prime is 65420433233. The reversal of 65420433194 is 49133402456.

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., 60661227025 + 4759206169 = 246295^2 + 68987^2 .

It is not an unprimeable number, because it can be changed into a prime (65420433193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16355108297 + ... + 16355108300.

Almost surely, 2^65420433194 is an apocalyptic number.

65420433194 is a deficient number, since it is larger than the sum of its proper divisors (32710216600).

65420433194 is a wasteful number, since it uses less digits than its factorization.

65420433194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32710216599.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 65420433194 in words is "sixty-five billion, four hundred twenty million, four hundred thirty-three thousand, one hundred ninety-four".