71947927408 has 40 divisors (see below), whose sum is σ = 168684640992. Its totient is φ = 29021011968.

The previous prime is 71947927369. The next prime is 71947927439. The reversal of 71947927408 is 80472974917.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18891985 + ... + 18895792.

Almost surely, 2^71947927408 is an apocalyptic number.

It is an amenable number.

71947927408 is an abundant number, since it is smaller than the sum of its proper divisors (96736713584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71947927408 is a wasteful number, since it uses less digits than its factorization.

71947927408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37787809 (or 37787803 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 58.

The spelling of 71947927408 in words is "seventy-one billion, nine hundred forty-seven million, nine hundred twenty-seven thousand, four hundred eight".