1071644857116 has 24 divisors (see below), whose sum is σ = 2505515712000. Its totient is φ = 356499088752.

The previous prime is 1071644857099. The next prime is 1071644857117. The reversal of 1071644857116 is 6117584461701.

It is a super-2 number, since 2×1071644857116² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071644857117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89476716 + ... + 89488691.

It is an arithmetic number, because the mean of its divisors is an integer number (104396488000).

Almost surely, 2^{1071644857116} is an apocalyptic number.

It is an amenable number.

1071644857116 is an abundant number, since it is smaller than the sum of its proper divisors (1433870854884).

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

1071644857116 is a wasteful number, since it uses less digits than its factorization.

1071644857116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178965913 (or 178965911 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 1071644857116 in words is "one trillion, seventy-one billion, six hundred forty-four million, eight hundred fifty-seven thousand, one hundred sixteen".