71438937758 has 8 divisors (see below), whose sum is σ = 109180263528. Its totient is φ = 35045516584.

The previous prime is 71438937743. The next prime is 71438937781. The reversal of 71438937758 is 85773983417.

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

It is a self number, because there is not a number n which added to its sum of digits gives 71438937758.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336976016 + ... + 336976227.

It is an arithmetic number, because the mean of its divisors is an integer number (13647532941).

Almost surely, 2^71438937758 is an apocalyptic number.

71438937758 is a deficient number, since it is larger than the sum of its proper divisors (37741325770).

71438937758 is a wasteful number, since it uses less digits than its factorization.

71438937758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673952298.

The product of its digits is 35562240, while the sum is 62.

The spelling of 71438937758 in words is "seventy-one billion, four hundred thirty-eight million, nine hundred thirty-seven thousand, seven hundred fifty-eight".