70681386137357 has 4 divisors (see below), whose sum is σ = 70796690193660. Its totient is φ = 70566082081056.

The previous prime is 70681386137339. The next prime is 70681386137359. The reversal of 70681386137357 is 75373168318607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36177169444516 + 34504216692841 = 6014746^2 + 5874029^2 .

It is a cyclic number.

It is not a de Polignac number, because 70681386137357 - 2⁶ = 70681386137293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70681386137293 and 70681386137302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70681386137359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57652027232 + ... + 57652028457.

It is an arithmetic number, because the mean of its divisors is an integer number (17699172548415).

Almost surely, 2^{70681386137357} is an apocalyptic number.

It is an amenable number.

70681386137357 is a deficient number, since it is larger than the sum of its proper divisors (115304056303).

70681386137357 is a wasteful number, since it uses less digits than its factorization.

70681386137357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115304056302.

The product of its (nonzero) digits is 106686720, while the sum is 65.

The spelling of 70681386137357 in words is "seventy trillion, six hundred eighty-one billion, three hundred eighty-six million, one hundred thirty-seven thousand, three hundred fifty-seven".