71102827640 has 64 divisors (see below), whose sum is σ = 175953375360. Its totient is φ = 25694760960.

The previous prime is 71102827637. The next prime is 71102827657. The reversal of 71102827640 is 4672820117.

It is a super-2 number, since 2×71102827640² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71102827594 and 71102827603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1430201 + ... + 1479080.

It is an arithmetic number, because the mean of its divisors is an integer number (2749271490).

Almost surely, 2^71102827640 is an apocalyptic number.

It is an amenable number.

71102827640 is an abundant number, since it is smaller than the sum of its proper divisors (104850547720).

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

71102827640 is a wasteful number, since it uses less digits than its factorization.

71102827640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909352 (or 2909348 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 71102827640 in words is "seventy-one billion, one hundred two million, eight hundred twenty-seven thousand, six hundred forty".