1446220711381 has 4 divisors (see below), whose sum is σ = 1446483331872. Its totient is φ = 1445958090892.

The previous prime is 1446220711307. The next prime is 1446220711427. The reversal of 1446220711381 is 1831170226441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1446220711381 - 2¹⁵ = 1446220678613 is a prime.

It is a super-2 number, since 2×1446220711381² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1446220711301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131301985 + ... + 131312998.

It is an arithmetic number, because the mean of its divisors is an integer number (361620832968).

Almost surely, 2^{1446220711381} is an apocalyptic number.

It is an amenable number.

1446220711381 is a deficient number, since it is larger than the sum of its proper divisors (262620491).

1446220711381 is an equidigital number, since it uses as much as digits as its factorization.

1446220711381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262620490.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 1446220711381 in words is "one trillion, four hundred forty-six billion, two hundred twenty million, seven hundred eleven thousand, three hundred eighty-one".