65144405326436 has 6 divisors (see below), whose sum is σ = 114002709321270. Its totient is φ = 32572202663216.

The previous prime is 65144405326409. The next prime is 65144405326457. The reversal of 65144405326436 is 63462350444156.

It can be written as a sum of positive squares in only one way, i.e., 63473089000000 + 1671316326436 = 7967000^2 + 1292794^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8143050665801 + ... + 8143050665808.

It is an arithmetic number, because the mean of its divisors is an integer number (19000451553545).

Almost surely, 2^{65144405326436} is an apocalyptic number.

It is an amenable number.

65144405326436 is a deficient number, since it is larger than the sum of its proper divisors (48858303994834).

65144405326436 is a wasteful number, since it uses less digits than its factorization.

65144405326436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16286101331613 (or 16286101331611 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 53.

The spelling of 65144405326436 in words is "sixty-five trillion, one hundred forty-four billion, four hundred five million, three hundred twenty-six thousand, four hundred thirty-six".