1001972276213 has 4 divisors (see below), whose sum is σ = 1001980758828. Its totient is φ = 1001963793600.

The previous prime is 1001972276197. The next prime is 1001972276219. The reversal of 1001972276213 is 3126722791001.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 497953212964 + 504019063249 = 705658^2 + 709943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001972276213 - 2⁴ = 1001972276197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001972276219) 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, 4061588 + ... + 4301213.

It is an arithmetic number, because the mean of its divisors is an integer number (250495189707).

Almost surely, 2^{1001972276213} is an apocalyptic number.

It is an amenable number.

1001972276213 is a deficient number, since it is larger than the sum of its proper divisors (8482615).

1001972276213 is an equidigital number, since it uses as much as digits as its factorization.

1001972276213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8482614.

The product of its (nonzero) digits is 63504, while the sum is 41.

The spelling of 1001972276213 in words is "one trillion, one billion, nine hundred seventy-two million, two hundred seventy-six thousand, two hundred thirteen".