71441980477 has 4 divisors (see below), whose sum is σ = 81647977696. Its totient is φ = 61235983260.

The previous prime is 71441980457. The next prime is 71441980523. The reversal of 71441980477 is 77408914417.

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 71441980477 - 2⁷ = 71441980349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71441980457) 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, 5102998599 + ... + 5102998612.

It is an arithmetic number, because the mean of its divisors is an integer number (20411994424).

Almost surely, 2^71441980477 is an apocalyptic number.

It is an amenable number.

71441980477 is a deficient number, since it is larger than the sum of its proper divisors (10205997219).

71441980477 is a wasteful number, since it uses less digits than its factorization.

71441980477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10205997218.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The spelling of 71441980477 in words is "seventy-one billion, four hundred forty-one million, nine hundred eighty thousand, four hundred seventy-seven".