3445572807961 has 2 divisors, whose sum is σ = 3445572807962. Its totient is φ = 3445572807960.

The previous prime is 3445572807949. The next prime is 3445572808031. The reversal of 3445572807961 is 1697082755443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2130376695561 + 1315196112400 = 1459581^2 + 1146820^2 .

It is a cyclic number.

It is not a de Polignac number, because 3445572807961 - 2²¹ = 3445570710809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3445572807961.

It is not a weakly prime, because it can be changed into another prime (3445572807931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1722786403980 + 1722786403981.

It is an arithmetic number, because the mean of its divisors is an integer number (1722786403981).

It is a 1-persistent number, because it is pandigital, but 2⋅3445572807961 = 6891145615922 is not.

Almost surely, 2^{3445572807961} is an apocalyptic number.

It is an amenable number.

3445572807961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3445572807961 is an equidigital number, since it uses as much as digits as its factorization.

3445572807961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50803200, while the sum is 61.

The spelling of 3445572807961 in words is "three trillion, four hundred forty-five billion, five hundred seventy-two million, eight hundred seven thousand, nine hundred sixty-one".