71740753633 has 4 divisors (see below), whose sum is σ = 71743246128. Its totient is φ = 71738261140.

The previous prime is 71740753597. The next prime is 71740753657. The reversal of 71740753633 is 33635704717.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33635704717 = 6733 ⋅4995649.

It is a cyclic number.

It is not a de Polignac number, because 71740753633 - 2²¹ = 71738656481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71740753333) 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, 1202563 + ... + 1260808.

It is an arithmetic number, because the mean of its divisors is an integer number (17935811532).

Almost surely, 2^71740753633 is an apocalyptic number.

It is an amenable number.

71740753633 is a deficient number, since it is larger than the sum of its proper divisors (2492495).

71740753633 is a wasteful number, since it uses less digits than its factorization.

71740753633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492494.

The product of its (nonzero) digits is 1111320, while the sum is 46.

The spelling of 71740753633 in words is "seventy-one billion, seven hundred forty million, seven hundred fifty-three thousand, six hundred thirty-three".