1280048177644 has 6 divisors (see below), whose sum is σ = 2240084310884. Its totient is φ = 640024088820.

The previous prime is 1280048177587. The next prime is 1280048177647. The reversal of 1280048177644 is 4467718400821.

It is a junction number, because it is equal to n+sod(n) for n = 1280048177591 and 1280048177600.

It is not an unprimeable number, because it can be changed into a prime (1280048177647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160006022202 + ... + 160006022209.

Almost surely, 2^{1280048177644} is an apocalyptic number.

It is an amenable number.

1280048177644 is a deficient number, since it is larger than the sum of its proper divisors (960036133240).

1280048177644 is a wasteful number, since it uses less digits than its factorization.

1280048177644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320012044415 (or 320012044413 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 52.

The spelling of 1280048177644 in words is "one trillion, two hundred eighty billion, forty-eight million, one hundred seventy-seven thousand, six hundred forty-four".