1449278757971 has 16 divisors (see below), whose sum is σ = 1589152416000. Its totient is φ = 1310760079200.

The previous prime is 1449278757967. The next prime is 1449278757977. The reversal of 1449278757971 is 1797578729441.

It is not a de Polignac number, because 1449278757971 - 2² = 1449278757967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1449278757895 and 1449278757904.

It is not an unprimeable number, because it can be changed into a prime (1449278757977) 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, 23020925 + ... + 23083793.

It is an arithmetic number, because the mean of its divisors is an integer number (99322026000).

Almost surely, 2^{1449278757971} is an apocalyptic number.

1449278757971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1449278757971 is a deficient number, since it is larger than the sum of its proper divisors (139873658029).

1449278757971 is a wasteful number, since it uses less digits than its factorization.

1449278757971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73610.

The product of its digits is 248935680, while the sum is 71.

The spelling of 1449278757971 in words is "one trillion, four hundred forty-nine billion, two hundred seventy-eight million, seven hundred fifty-seven thousand, nine hundred seventy-one".