71145887938 has 8 divisors (see below), whose sum is σ = 106721229888. Its totient is φ = 35572144644.

The previous prime is 71145887929. The next prime is 71145887957. The reversal of 71145887938 is 83978854117.

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

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, 281406 + ... + 470617.

It is an arithmetic number, because the mean of its divisors is an integer number (13340153736).

Almost surely, 2^71145887938 is an apocalyptic number.

71145887938 is a deficient number, since it is larger than the sum of its proper divisors (35575341950).

71145887938 is a wasteful number, since it uses less digits than its factorization.

71145887938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799328.

The product of its digits is 13547520, while the sum is 61.

The spelling of 71145887938 in words is "seventy-one billion, one hundred forty-five million, eight hundred eighty-seven thousand, nine hundred thirty-eight".