1257306586678 has 8 divisors (see below), whose sum is σ = 1905402765672. Its totient is φ = 622172331456.

The previous prime is 1257306586661. The next prime is 1257306586681. The reversal of 1257306586678 is 8766856037521.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3240480700 + ... + 3240481087.

It is an arithmetic number, because the mean of its divisors is an integer number (238175345709).

Almost surely, 2^{1257306586678} is an apocalyptic number.

1257306586678 is a deficient number, since it is larger than the sum of its proper divisors (648096178994).

1257306586678 is an equidigital number, since it uses as much as digits as its factorization.

1257306586678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480961886.

The product of its (nonzero) digits is 101606400, while the sum is 64.

The spelling of 1257306586678 in words is "one trillion, two hundred fifty-seven billion, three hundred six million, five hundred eighty-six thousand, six hundred seventy-eight".