71371513154 has 4 divisors (see below), whose sum is σ = 107057269734. Its totient is φ = 35685756576.

The previous prime is 71371513139. The next prime is 71371513181. The reversal of 71371513154 is 45131517317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45131517317 = 211 ⋅213893447.

It can be written as a sum of positive squares in only one way, i.e., 54347265625 + 17024247529 = 233125^2 + 130477^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17842878287 + ... + 17842878290.

Almost surely, 2^71371513154 is an apocalyptic number.

71371513154 is a deficient number, since it is larger than the sum of its proper divisors (35685756580).

71371513154 is a wasteful number, since it uses less digits than its factorization.

71371513154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35685756579.

The product of its digits is 44100, while the sum is 38.

The spelling of 71371513154 in words is "seventy-one billion, three hundred seventy-one million, five hundred thirteen thousand, one hundred fifty-four".