6145840818749 has 2 divisors, whose sum is σ = 6145840818750. Its totient is φ = 6145840818748.

The previous prime is 6145840818701. The next prime is 6145840818773. The reversal of 6145840818749 is 9478180485416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5485985159524 + 659855659225 = 2342218^2 + 812315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6145840818749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6145840818779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3072920409374 + 3072920409375.

It is an arithmetic number, because the mean of its divisors is an integer number (3072920409375).

Almost surely, 2^{6145840818749} is an apocalyptic number.

It is an amenable number.

6145840818749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6145840818749 is an equidigital number, since it uses as much as digits as its factorization.

6145840818749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61931520, while the sum is 65.

The spelling of 6145840818749 in words is "six trillion, one hundred forty-five billion, eight hundred forty million, eight hundred eighteen thousand, seven hundred forty-nine".