64413434161256 has 16 divisors (see below), whose sum is σ = 120921229196640. Its totient is φ = 32167773042160.

The previous prime is 64413434161253. The next prime is 64413434161273. The reversal of 64413434161256 is 65216143431446.

It is a super-3 number, since 3×64413434161256³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (64413434161253) 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, 4867997780 + ... + 4868011011.

It is an arithmetic number, because the mean of its divisors is an integer number (7557576824790).

Almost surely, 2^{64413434161256} is an apocalyptic number.

It is an amenable number.

64413434161256 is a deficient number, since it is larger than the sum of its proper divisors (56507795035384).

64413434161256 is a wasteful number, since it uses less digits than its factorization.

64413434161256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9736009624 (or 9736009620 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 50.

The spelling of 64413434161256 in words is "sixty-four trillion, four hundred thirteen billion, four hundred thirty-four million, one hundred sixty-one thousand, two hundred fifty-six".