2449145836861 has 16 divisors (see below), whose sum is σ = 2564794774080. Its totient is φ = 2336812410240.

The previous prime is 2449145836853. The next prime is 2449145836937. The reversal of 2449145836861 is 1686385419442.

It is a cyclic number.

It is not a de Polignac number, because 2449145836861 - 2³ = 2449145836853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2449145836861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2449145833861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3537570 + ... + 4172851.

It is an arithmetic number, because the mean of its divisors is an integer number (160299673380).

Almost surely, 2^{2449145836861} is an apocalyptic number.

It is an amenable number.

2449145836861 is a deficient number, since it is larger than the sum of its proper divisors (115648937219).

2449145836861 is an equidigital number, since it uses as much as digits as its factorization.

2449145836861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710636.

The product of its digits is 39813120, while the sum is 61.

The spelling of 2449145836861 in words is "two trillion, four hundred forty-nine billion, one hundred forty-five million, eight hundred thirty-six thousand, eight hundred sixty-one".