449993656761 has 24 divisors (see below), whose sum is σ = 659631524160. Its totient is φ = 272666903520.

The previous prime is 449993656757. The next prime is 449993656789. The reversal of 449993656761 is 167656399944.

It is not a de Polignac number, because 449993656761 - 2² = 449993656757 is a prime.

It is a super-2 number, since 2×449993656761² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (449993666761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1659591 + ... + 1911603.

It is an arithmetic number, because the mean of its divisors is an integer number (27484646840).

Almost surely, 2^449993656761 is an apocalyptic number.

It is an amenable number.

449993656761 is a deficient number, since it is larger than the sum of its proper divisors (209637867399).

449993656761 is a wasteful number, since it uses less digits than its factorization.

449993656761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256957 (or 256946 counting only the distinct ones).

The product of its digits is 264539520, while the sum is 69.

The spelling of 449993656761 in words is "four hundred forty-nine billion, nine hundred ninety-three million, six hundred fifty-six thousand, seven hundred sixty-one".