71197698340 has 12 divisors (see below), whose sum is σ = 149515166556. Its totient is φ = 28479079328.

The previous prime is 71197698331. The next prime is 71197698343. The reversal of 71197698340 is 4389679117.

It can be written as a sum of positive squares in 2 ways, for example, as 30434895936 + 40762802404 = 174456^2 + 201898^2 .

It is a super-2 number, since 2×71197698340² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71197698343) 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, 1779942439 + ... + 1779942478.

It is an arithmetic number, because the mean of its divisors is an integer number (12459597213).

Almost surely, 2^71197698340 is an apocalyptic number.

It is an amenable number.

71197698340 is an abundant number, since it is smaller than the sum of its proper divisors (78317468216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71197698340 is a wasteful number, since it uses less digits than its factorization.

71197698340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559884926 (or 3559884924 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 55.

The spelling of 71197698340 in words is "seventy-one billion, one hundred ninety-seven million, six hundred ninety-eight thousand, three hundred forty".