1071664072071 has 16 divisors (see below), whose sum is σ = 1516993673184. Its totient is φ = 670613935104.

The previous prime is 1071664072021. The next prime is 1071664072081. The reversal of 1071664072071 is 1702704661701.

It is not a de Polignac number, because 1071664072071 - 2¹⁴ = 1071664055687 is a prime.

It is a super-2 number, since 2×1071664072071² (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 (1071664072021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28148566 + ... + 28186611.

It is an arithmetic number, because the mean of its divisors is an integer number (94812104574).

Almost surely, 2^{1071664072071} is an apocalyptic number.

1071664072071 is a deficient number, since it is larger than the sum of its proper divisors (445329601113).

1071664072071 is a wasteful number, since it uses less digits than its factorization.

1071664072071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56335570.

The product of its (nonzero) digits is 98784, while the sum is 42.

The spelling of 1071664072071 in words is "one trillion, seventy-one billion, six hundred sixty-four million, seventy-two thousand, seventy-one".