71408551405 has 8 divisors (see below), whose sum is σ = 85737072384. Its totient is φ = 57095634000.

The previous prime is 71408551399. The next prime is 71408551439. The reversal of 71408551405 is 50415580417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71408551405 - 2¹⁵ = 71408518637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3890821 + ... + 3909130.

It is an arithmetic number, because the mean of its divisors is an integer number (10717134048).

Almost surely, 2^71408551405 is an apocalyptic number.

It is an amenable number.

71408551405 is a deficient number, since it is larger than the sum of its proper divisors (14328520979).

71408551405 is a wasteful number, since it uses less digits than its factorization.

71408551405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7801787.

The product of its (nonzero) digits is 112000, while the sum is 40.

The spelling of 71408551405 in words is "seventy-one billion, four hundred eight million, five hundred fifty-one thousand, four hundred five".