10644401449 has 16 divisors (see below), whose sum is σ = 12125168640. Its totient is φ = 9249721360.

The previous prime is 10644401401. The next prime is 10644401489. The reversal of 10644401449 is 94410444601.

It is not a de Polignac number, because 10644401449 - 2⁷ = 10644401321 is a prime.

It is a super-2 number, since 2×10644401449² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10644401489) 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, 380934 + ... + 407920.

It is an arithmetic number, because the mean of its divisors is an integer number (757823040).

Almost surely, 2^10644401449 is an apocalyptic number.

It is an amenable number.

10644401449 is a deficient number, since it is larger than the sum of its proper divisors (1480767191).

10644401449 is a wasteful number, since it uses less digits than its factorization.

10644401449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28580.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 10644401449 in words is "ten billion, six hundred forty-four million, four hundred one thousand, four hundred forty-nine".