3540468251869 has 2 divisors, whose sum is σ = 3540468251870. Its totient is φ = 3540468251868.

The previous prime is 3540468251867. The next prime is 3540468251927. The reversal of 3540468251869 is 9681528640453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2502233604025 + 1038234647844 = 1581845^2 + 1018938^2 .

It is a cyclic number.

It is not a de Polignac number, because 3540468251869 - 2¹ = 3540468251867 is a prime.

It is a super-2 number, since 2×3540468251869² (a number of 26 digits) contains 22 as substring.

Together with 3540468251867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3540468251867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1770234125934 + 1770234125935.

It is an arithmetic number, because the mean of its divisors is an integer number (1770234125935).

Almost surely, 2^{3540468251869} is an apocalyptic number.

It is an amenable number.

3540468251869 is a deficient number, since it is larger than the sum of its proper divisors (1).

3540468251869 is an equidigital number, since it uses as much as digits as its factorization.

3540468251869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49766400, while the sum is 61.

The spelling of 3540468251869 in words is "three trillion, five hundred forty billion, four hundred sixty-eight million, two hundred fifty-one thousand, eight hundred sixty-nine".