71154664421633 has 16 divisors (see below), whose sum is σ = 77364006720000. Its totient is φ = 65050964308800.

The previous prime is 71154664421629. The next prime is 71154664421723. The reversal of 71154664421633 is 33612446645117.

It is a cyclic number.

It is not a de Polignac number, because 71154664421633 - 2² = 71154664421629 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71154664721633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7348133 + ... + 14010866.

It is an arithmetic number, because the mean of its divisors is an integer number (4835250420000).

Almost surely, 2^{71154664421633} is an apocalyptic number.

It is an amenable number.

71154664421633 is a deficient number, since it is larger than the sum of its proper divisors (6209342298367).

71154664421633 is a wasteful number, since it uses less digits than its factorization.

71154664421633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21361472.

The product of its digits is 8709120, while the sum is 53.

The spelling of 71154664421633 in words is "seventy-one trillion, one hundred fifty-four billion, six hundred sixty-four million, four hundred twenty-one thousand, six hundred thirty-three".