64621126435463 has 4 divisors (see below), whose sum is σ = 69591982315128. Its totient is φ = 59650270555800.

The previous prime is 64621126435447. The next prime is 64621126435487. The reversal of 64621126435463 is 36453462112646.

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

It is a cyclic number.

It is not a de Polignac number, because 64621126435463 - 2⁴ = 64621126435447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64621126435363) 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, 2485427939813 + ... + 2485427939838.

It is an arithmetic number, because the mean of its divisors is an integer number (17397995578782).

Almost surely, 2^{64621126435463} is an apocalyptic number.

64621126435463 is a deficient number, since it is larger than the sum of its proper divisors (4970855879665).

64621126435463 is a wasteful number, since it uses less digits than its factorization.

64621126435463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970855879664.

The product of its digits is 14929920, while the sum is 53.

The spelling of 64621126435463 in words is "sixty-four trillion, six hundred twenty-one billion, one hundred twenty-six million, four hundred thirty-five thousand, four hundred sixty-three".