1071288720397 has 32 divisors (see below), whose sum is σ = 1299023928320. Its totient is φ = 863022625920.

The previous prime is 1071288720371. The next prime is 1071288720409. The reversal of 1071288720397 is 7930278821701.

It is not a de Polignac number, because 1071288720397 - 2³⁹ = 521532906509 is a prime.

It is a super-2 number, since 2×1071288720397² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071288720497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8722738 + ... + 8844700.

It is an arithmetic number, because the mean of its divisors is an integer number (40594497760).

Almost surely, 2^{1071288720397} is an apocalyptic number.

It is an amenable number.

1071288720397 is a deficient number, since it is larger than the sum of its proper divisors (227735207923).

1071288720397 is a wasteful number, since it uses less digits than its factorization.

1071288720397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122513.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 1071288720397 in words is "one trillion, seventy-one billion, two hundred eighty-eight million, seven hundred twenty thousand, three hundred ninety-seven".