1378738851724 has 12 divisors (see below), whose sum is σ = 2598392451424. Its totient is φ = 636341008464.

The previous prime is 1378738851697. The next prime is 1378738851731. The reversal of 1378738851724 is 4271588378731.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13257104292 + ... + 13257104395.

Almost surely, 2^{1378738851724} is an apocalyptic number.

It is an amenable number.

1378738851724 is a deficient number, since it is larger than the sum of its proper divisors (1219653599700).

1378738851724 is a wasteful number, since it uses less digits than its factorization.

1378738851724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26514208704 (or 26514208702 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 64.

The spelling of 1378738851724 in words is "one trillion, three hundred seventy-eight billion, seven hundred thirty-eight million, eight hundred fifty-one thousand, seven hundred twenty-four".