1681139381135 has 8 divisors (see below), whose sum is σ = 2030727306336. Its totient is φ = 1336004805600.

The previous prime is 1681139381113. The next prime is 1681139381171. The reversal of 1681139381135 is 5311839311861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1681139381135 - 2⁶ = 1681139381071 is a prime.

It is a Duffinian number.

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, 1113336584 + ... + 1113338093.

It is an arithmetic number, because the mean of its divisors is an integer number (253840913292).

Almost surely, 2^{1681139381135} is an apocalyptic number.

1681139381135 is a deficient number, since it is larger than the sum of its proper divisors (349587925201).

1681139381135 is a wasteful number, since it uses less digits than its factorization.

1681139381135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226674833.

The product of its digits is 466560, while the sum is 50.

The spelling of 1681139381135 in words is "one trillion, six hundred eighty-one billion, one hundred thirty-nine million, three hundred eighty-one thousand, one hundred thirty-five".