71770513268 has 24 divisors (see below), whose sum is σ = 127408761480. Its totient is φ = 35368704000.

The previous prime is 71770513223. The next prime is 71770513271. The reversal of 71770513268 is 86231507717.

It can be written as a sum of positive squares in 4 ways, for example, as 1068766864 + 70701746404 = 32692^2 + 265898^2 .

It is a congruent number.

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, 331268 + ... + 503268.

It is an arithmetic number, because the mean of its divisors is an integer number (5308698395).

Almost surely, 2^71770513268 is an apocalyptic number.

It is an amenable number.

71770513268 is a deficient number, since it is larger than the sum of its proper divisors (55638248212).

71770513268 is a wasteful number, since it uses less digits than its factorization.

71770513268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173507 (or 173505 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 71770513268 in words is "seventy-one billion, seven hundred seventy million, five hundred thirteen thousand, two hundred sixty-eight".