71322654521 has 4 divisors (see below), whose sum is σ = 73623385344. Its totient is φ = 69021923700.

The previous prime is 71322654503. The next prime is 71322654587. The reversal of 71322654521 is 12545622317.

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.

It is a cyclic number.

It is not a de Polignac number, because 71322654521 - 2¹⁴ = 71322638137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71322054521) 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, 1150365365 + ... + 1150365426.

It is an arithmetic number, because the mean of its divisors is an integer number (18405846336).

Almost surely, 2^71322654521 is an apocalyptic number.

It is an amenable number.

71322654521 is a deficient number, since it is larger than the sum of its proper divisors (2300730823).

71322654521 is a wasteful number, since it uses less digits than its factorization.

71322654521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300730822.

The product of its digits is 100800, while the sum is 38.

The spelling of 71322654521 in words is "seventy-one billion, three hundred twenty-two million, six hundred fifty-four thousand, five hundred twenty-one".