71157047605 has 12 divisors (see below), whose sum is σ = 99329430060. Its totient is φ = 48793403904.

The previous prime is 71157047581. The next prime is 71157047651. The reversal of 71157047605 is 50674075117.

It can be written as a sum of positive squares in 2 ways, for example, as 23097008529 + 48060039076 = 151977^2 + 219226^2 .

It is not a de Polignac number, because 71157047605 - 2¹³ = 71157039413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145218220 + ... + 145218709.

It is an arithmetic number, because the mean of its divisors is an integer number (8277452505).

Almost surely, 2^71157047605 is an apocalyptic number.

It is an amenable number.

71157047605 is a deficient number, since it is larger than the sum of its proper divisors (28172382455).

71157047605 is a wasteful number, since it uses less digits than its factorization.

71157047605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290436948 (or 290436941 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 43.

The spelling of 71157047605 in words is "seventy-one billion, one hundred fifty-seven million, forty-seven thousand, six hundred five".