1071078989816 has 64 divisors (see below), whose sum is σ = 2195746375680. Its totient is φ = 485765527680.

The previous prime is 1071078989749. The next prime is 1071078989857. The reversal of 1071078989816 is 6189898701701.

It is a super-2 number, since 2×1071078989816² (a number of 25 digits) contains 22 as substring.

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, 109658165 + ... + 109667931.

It is an arithmetic number, because the mean of its divisors is an integer number (34308537120).

Almost surely, 2^{1071078989816} is an apocalyptic number.

It is an amenable number.

1071078989816 is an abundant number, since it is smaller than the sum of its proper divisors (1124667385864).

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

1071078989816 is a wasteful number, since it uses less digits than its factorization.

1071078989816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12444 (or 12440 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 65.

The spelling of 1071078989816 in words is "one trillion, seventy-one billion, seventy-eight million, nine hundred eighty-nine thousand, eight hundred sixteen".