71690555481 has 8 divisors (see below), whose sum is σ = 95836984320. Its totient is φ = 47668915152.

The previous prime is 71690555473. The next prime is 71690555491. The reversal of 71690555481 is 18455509617.

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

It is not a de Polignac number, because 71690555481 - 2³ = 71690555473 is a prime.

It is a super-2 number, since 2×71690555481² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71690555401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31195786 + ... + 31198083.

It is an arithmetic number, because the mean of its divisors is an integer number (11979623040).

Almost surely, 2^71690555481 is an apocalyptic number.

It is an amenable number.

71690555481 is a deficient number, since it is larger than the sum of its proper divisors (24146428839).

71690555481 is a wasteful number, since it uses less digits than its factorization.

71690555481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62394255.

The product of its (nonzero) digits is 1512000, while the sum is 51.

The spelling of 71690555481 in words is "seventy-one billion, six hundred ninety million, five hundred fifty-five thousand, four hundred eighty-one".