1071572636197 has 4 divisors (see below), whose sum is σ = 1224654441376. Its totient is φ = 918490831020.

The previous prime is 1071572636159. The next prime is 1071572636221. The reversal of 1071572636197 is 7916362751701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1071572636197 - 2³⁵ = 1037212897829 is a prime.

It is a super-3 number, since 3×1071572636197³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071572636117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76540902579 + ... + 76540902592.

It is an arithmetic number, because the mean of its divisors is an integer number (306163610344).

Almost surely, 2^{1071572636197} is an apocalyptic number.

It is an amenable number.

1071572636197 is a deficient number, since it is larger than the sum of its proper divisors (153081805179).

1071572636197 is an equidigital number, since it uses as much as digits as its factorization.

1071572636197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153081805178.

The product of its (nonzero) digits is 3333960, while the sum is 55.

The spelling of 1071572636197 in words is "one trillion, seventy-one billion, five hundred seventy-two million, six hundred thirty-six thousand, one hundred ninety-seven".