1378135977670 has 16 divisors (see below), whose sum is σ = 2505205600848. Its totient is φ = 545796426400.

The previous prime is 1378135977661. The next prime is 1378135977683. The reversal of 1378135977670 is 767795318731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682244524 + ... + 682246543.

It is an arithmetic number, because the mean of its divisors is an integer number (156575350053).

Almost surely, 2^{1378135977670} is an apocalyptic number.

1378135977670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1378135977670 is a deficient number, since it is larger than the sum of its proper divisors (1127069623178).

1378135977670 is a wasteful number, since it uses less digits than its factorization.

1378135977670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364491175.

The product of its (nonzero) digits is 46675440, while the sum is 64.

The spelling of 1378135977670 in words is "one trillion, three hundred seventy-eight billion, one hundred thirty-five million, nine hundred seventy-seven thousand, six hundred seventy".