1441402664561 has 8 divisors (see below), whose sum is σ = 1526541419880. Its totient is φ = 1356302838528.

The previous prime is 1441402664531. The next prime is 1441402664657. The reversal of 1441402664561 is 1654662041441.

It can be written as a sum of positive squares in 4 ways, for example, as 1217348122225 + 224054542336 = 1103335^2 + 473344^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1441402664561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1441402664501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9656066 + ... + 9804203.

It is an arithmetic number, because the mean of its divisors is an integer number (190817677485).

Almost surely, 2^{1441402664561} is an apocalyptic number.

It is an amenable number.

1441402664561 is a deficient number, since it is larger than the sum of its proper divisors (85138755319).

1441402664561 is a wasteful number, since it uses less digits than its factorization.

1441402664561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19464643.

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 1441402664561 in words is "one trillion, four hundred forty-one billion, four hundred two million, six hundred sixty-four thousand, five hundred sixty-one".