1445138169477 has 4 divisors (see below), whose sum is σ = 1926850892640. Its totient is φ = 963425446316.

The previous prime is 1445138169467. The next prime is 1445138169499. The reversal of 1445138169477 is 7749618315441.

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 1445138169477 - 2⁶ = 1445138169413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1445138169477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445138169467) 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, 240856361577 + ... + 240856361582.

It is an arithmetic number, because the mean of its divisors is an integer number (481712723160).

Almost surely, 2^{1445138169477} is an apocalyptic number.

It is an amenable number.

1445138169477 is a deficient number, since it is larger than the sum of its proper divisors (481712723163).

1445138169477 is an equidigital number, since it uses as much as digits as its factorization.

1445138169477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481712723162.

The product of its digits is 20321280, while the sum is 60.

The spelling of 1445138169477 in words is "one trillion, four hundred forty-five billion, one hundred thirty-eight million, one hundred sixty-nine thousand, four hundred seventy-seven".