71123490994 has 16 divisors (see below), whose sum is σ = 106969247640. Its totient is φ = 35467113600.

The previous prime is 71123490983. The next prime is 71123491003. The reversal of 71123490994 is 49909432117.

It can be written as a sum of positive squares in 4 ways, for example, as 71104889025 + 18601969 = 266655^2 + 4313^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6621252 + ... + 6631984.

Almost surely, 2^71123490994 is an apocalyptic number.

71123490994 is a deficient number, since it is larger than the sum of its proper divisors (35845756646).

71123490994 is a wasteful number, since it uses less digits than its factorization.

71123490994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19245.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 71123490994 in words is "seventy-one billion, one hundred twenty-three million, four hundred ninety thousand, nine hundred ninety-four".