1071572636207 has 4 divisors (see below), whose sum is σ = 1071663636576. Its totient is φ = 1071481635840.

The previous prime is 1071572636159. The next prime is 1071572636221. The reversal of 1071572636207 is 7026362751701.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1071572636207 - 2¹⁸ = 1071572374063 is a prime.

It is a super-2 number, since 2×1071572636207² (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 (1071572633207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45482519 + ... + 45506072.

It is an arithmetic number, because the mean of its divisors is an integer number (267915909144).

Almost surely, 2^{1071572636207} is an apocalyptic number.

1071572636207 is a deficient number, since it is larger than the sum of its proper divisors (91000369).

1071572636207 is an equidigital number, since it uses as much as digits as its factorization.

1071572636207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91000368.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 1071572636207 in words is "one trillion, seventy-one billion, five hundred seventy-two million, six hundred thirty-six thousand, two hundred seven".