3875749785577 has 2 divisors, whose sum is σ = 3875749785578. Its totient is φ = 3875749785576.

The previous prime is 3875749785571. The next prime is 3875749785601. The reversal of 3875749785577 is 7755879475783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3874346608896 + 1403176681 = 1968336^2 + 37459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3875749785577 is a prime.

It is a super-2 number, since 2×3875749785577² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3875749785577.

It is not a weakly prime, because it can be changed into another prime (3875749785571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1937874892788 + 1937874892789.

It is an arithmetic number, because the mean of its divisors is an integer number (1937874892789).

Almost surely, 2^{3875749785577} is an apocalyptic number.

It is an amenable number.

3875749785577 is a deficient number, since it is larger than the sum of its proper divisors (1).

3875749785577 is an equidigital number, since it uses as much as digits as its factorization.

3875749785577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14521248000, while the sum is 82.

The spelling of 3875749785577 in words is "three trillion, eight hundred seventy-five billion, seven hundred forty-nine million, seven hundred eighty-five thousand, five hundred seventy-seven".