1378774228653 has 12 divisors (see below), whose sum is σ = 1999895676480. Its totient is φ = 915336864456.

The previous prime is 1378774228621. The next prime is 1378774228669. The reversal of 1378774228653 is 3568224778731.

It is a happy number.

1378774228653 is a `hidden beast` number, since 1 + 3 + 7 + 87 + 7 + 422 + 86 + 53 = 666.

It is not a de Polignac number, because 1378774228653 - 2⁵ = 1378774228621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378774221653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320493951 + ... + 320498252.

It is an arithmetic number, because the mean of its divisors is an integer number (166657973040).

Almost surely, 2^{1378774228653} is an apocalyptic number.

It is an amenable number.

1378774228653 is a deficient number, since it is larger than the sum of its proper divisors (621121447827).

1378774228653 is a wasteful number, since it uses less digits than its factorization.

1378774228653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640992448 (or 640992445 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 63.

The spelling of 1378774228653 in words is "one trillion, three hundred seventy-eight billion, seven hundred seventy-four million, two hundred twenty-eight thousand, six hundred fifty-three".