3644121483997 has 2 divisors, whose sum is σ = 3644121483998. Its totient is φ = 3644121483996.

The previous prime is 3644121483991. The next prime is 3644121484021. The reversal of 3644121483997 is 7993841214463.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3525359228836 + 118762255161 = 1877594^2 + 344619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3644121483997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3644121483991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822060741998 + 1822060741999.

It is an arithmetic number, because the mean of its divisors is an integer number (1822060741999).

Almost surely, 2^{3644121483997} is an apocalyptic number.

It is an amenable number.

3644121483997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644121483997 is an equidigital number, since it uses as much as digits as its factorization.

3644121483997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 61.

The spelling of 3644121483997 in words is "three trillion, six hundred forty-four billion, one hundred twenty-one million, four hundred eighty-three thousand, nine hundred ninety-seven".