71393701045 has 4 divisors (see below), whose sum is σ = 85672441260. Its totient is φ = 57114960832.

The previous prime is 71393701037. The next prime is 71393701073. The reversal of 71393701045 is 54010739317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54010739317 = 83 ⋅650731799.

It can be written as a sum of positive squares in 2 ways, for example, as 9700083121 + 61693617924 = 98489^2 + 248382^2 .

It is a cyclic number.

It is not a de Polignac number, because 71393701045 - 2³ = 71393701037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71393700989 and 71393701007.

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, 7139370100 + ... + 7139370109.

It is an arithmetic number, because the mean of its divisors is an integer number (21418110315).

Almost surely, 2^71393701045 is an apocalyptic number.

It is an amenable number.

71393701045 is a deficient number, since it is larger than the sum of its proper divisors (14278740215).

71393701045 is a wasteful number, since it uses less digits than its factorization.

71393701045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14278740214.

The product of its (nonzero) digits is 79380, while the sum is 40.

The spelling of 71393701045 in words is "seventy-one billion, three hundred ninety-three million, seven hundred one thousand, forty-five".