1071445372523 has 4 divisors (see below), whose sum is σ = 1071741110448. Its totient is φ = 1071149634600.

The previous prime is 1071445372469. The next prime is 1071445372541. The reversal of 1071445372523 is 3252735441701.

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 1071445372523 - 2³⁴ = 1054265503339 is a prime.

It is a super-2 number, since 2×1071445372523² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1071445372423) 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, 147863528 + ... + 147870773.

It is an arithmetic number, because the mean of its divisors is an integer number (267935277612).

Almost surely, 2^{1071445372523} is an apocalyptic number.

1071445372523 is a deficient number, since it is larger than the sum of its proper divisors (295737925).

1071445372523 is an equidigital number, since it uses as much as digits as its factorization.

1071445372523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295737924.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 1071445372523 in words is "one trillion, seventy-one billion, four hundred forty-five million, three hundred seventy-two thousand, five hundred twenty-three".