34572043861 has 2 divisors, whose sum is σ = 34572043862. Its totient is φ = 34572043860.

The previous prime is 34572043811. The next prime is 34572043879. The reversal of 34572043861 is 16834027543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19312382961 + 15259660900 = 138969^2 + 123530^2 .

It is a cyclic number.

It is not a de Polignac number, because 34572043861 - 2⁷ = 34572043733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34572043811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17286021930 + 17286021931.

It is an arithmetic number, because the mean of its divisors is an integer number (17286021931).

Almost surely, 2^34572043861 is an apocalyptic number.

It is an amenable number.

34572043861 is a deficient number, since it is larger than the sum of its proper divisors (1).

34572043861 is an equidigital number, since it uses as much as digits as its factorization.

34572043861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 34572043861 in words is "thirty-four billion, five hundred seventy-two million, forty-three thousand, eight hundred sixty-one".