71770517764 has 12 divisors (see below), whose sum is σ = 137016443088. Its totient is φ = 32622962600.

The previous prime is 71770517761. The next prime is 71770517837. The reversal of 71770517764 is 46771507717.

It is a super-2 number, since 2×71770517764² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71770517761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 815574022 + ... + 815574109.

It is an arithmetic number, because the mean of its divisors is an integer number (11418036924).

Almost surely, 2^71770517764 is an apocalyptic number.

It is an amenable number.

71770517764 is a deficient number, since it is larger than the sum of its proper divisors (65245925324).

71770517764 is a wasteful number, since it uses less digits than its factorization.

71770517764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631148146 (or 1631148144 counting only the distinct ones).

The product of its (nonzero) digits is 2016840, while the sum is 52.

The spelling of 71770517764 in words is "seventy-one billion, seven hundred seventy million, five hundred seventeen thousand, seven hundred sixty-four".