3250661621773 has 2 divisors, whose sum is σ = 3250661621774. Its totient is φ = 3250661621772.

The previous prime is 3250661621749. The next prime is 3250661621843. The reversal of 3250661621773 is 3771261660523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2515326216484 + 735335405289 = 1585978^2 + 857517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3250661621773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3250661621723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1625330810886 + 1625330810887.

It is an arithmetic number, because the mean of its divisors is an integer number (1625330810887).

Almost surely, 2^{3250661621773} is an apocalyptic number.

It is an amenable number.

3250661621773 is a deficient number, since it is larger than the sum of its proper divisors (1).

3250661621773 is an equidigital number, since it uses as much as digits as its factorization.

3250661621773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 49.

The spelling of 3250661621773 in words is "three trillion, two hundred fifty billion, six hundred sixty-one million, six hundred twenty-one thousand, seven hundred seventy-three".