1351705451678 has 16 divisors (see below), whose sum is σ = 2064523300224. Its totient is φ = 663596734680.

The previous prime is 1351705451671. The next prime is 1351705451699. The reversal of 1351705451678 is 8761545071531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351705451671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16387778 + ... + 16470053.

It is an arithmetic number, because the mean of its divisors is an integer number (129032706264).

Almost surely, 2^{1351705451678} is an apocalyptic number.

1351705451678 is a deficient number, since it is larger than the sum of its proper divisors (712817848546).

1351705451678 is a wasteful number, since it uses less digits than its factorization.

1351705451678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32858207.

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 1351705451678 in words is "one trillion, three hundred fifty-one billion, seven hundred five million, four hundred fifty-one thousand, six hundred seventy-eight".