7271745663 has 64 divisors (see below), whose sum is σ = 12192768000. Its totient is φ = 3753025920.

The previous prime is 7271745661. The next prime is 7271745673. The reversal of 7271745663 is 3665471727.

It is not a de Polignac number, because 7271745663 - 2¹ = 7271745661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7271745661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2692888 + ... + 2695586.

It is an arithmetic number, because the mean of its divisors is an integer number (190512000).

Almost surely, 2^7271745663 is an apocalyptic number.

7271745663 is a deficient number, since it is larger than the sum of its proper divisors (4921022337).

7271745663 is a wasteful number, since it uses less digits than its factorization.

7271745663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932.

The product of its digits is 1481760, while the sum is 48.

The square root of 7271745663 is about 85274.5311508659. The cubic root of 7271745663 is about 1937.3714412542.

The spelling of 7271745663 in words is "seven billion, two hundred seventy-one million, seven hundred forty-five thousand, six hundred sixty-three".