1378742551736 has 32 divisors (see below), whose sum is σ = 2820232998000. Its totient is φ = 626683875840.

The previous prime is 1378742551729. The next prime is 1378742551787. The reversal of 1378742551736 is 6371552478731.

It is a super-2 number, since 2×1378742551736² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3319790 + ... + 3711938.

Almost surely, 2^{1378742551736} is an apocalyptic number.

It is an amenable number.

1378742551736 is an abundant number, since it is smaller than the sum of its proper divisors (1441490446264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1378742551736 is a wasteful number, since it uses less digits than its factorization.

1378742551736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432119 (or 432115 counting only the distinct ones).

The product of its digits is 29635200, while the sum is 59.

The spelling of 1378742551736 in words is "one trillion, three hundred seventy-eight billion, seven hundred forty-two million, five hundred fifty-one thousand, seven hundred thirty-six".