71011378 has 4 divisors (see below), whose sum is σ = 106517070. Its totient is φ = 35505688.

The previous prime is 71011351. The next prime is 71011403. The reversal of 71011378 is 87311017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87311017 = 41 ⋅2129537.

It can be written as a sum of positive squares in only one way, i.e., 69772609 + 1238769 = 8353^2 + 1113^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17752843 + ... + 17752846.

Almost surely, 2^71011378 is an apocalyptic number.

71011378 is a deficient number, since it is larger than the sum of its proper divisors (35505692).

71011378 is a wasteful number, since it uses less digits than its factorization.

71011378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35505691.

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 71011378 is about 8426.8249062147. The cubic root of 71011378 is about 414.1038931150.

The spelling of 71011378 in words is "seventy-one million, eleven thousand, three hundred seventy-eight".