71621339469 has 16 divisors (see below), whose sum is σ = 98832960000. Its totient is φ = 46080136256.

The previous prime is 71621339441. The next prime is 71621339479. The reversal of 71621339469 is 96493312617.

It is a cyclic number.

It is not a de Polignac number, because 71621339469 - 2⁵ = 71621339437 is a prime.

It is a super-2 number, since 2×71621339469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71621339479) 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, 6532 + ... + 378530.

It is an arithmetic number, because the mean of its divisors is an integer number (6177060000).

Almost surely, 2^71621339469 is an apocalyptic number.

It is an amenable number.

71621339469 is a deficient number, since it is larger than the sum of its proper divisors (27211620531).

71621339469 is a wasteful number, since it uses less digits than its factorization.

71621339469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374244.

The product of its digits is 1469664, while the sum is 51.

The spelling of 71621339469 in words is "seventy-one billion, six hundred twenty-one million, three hundred thirty-nine thousand, four hundred sixty-nine".