157256129678 has 8 divisors (see below), whose sum is σ = 241637467680. Its totient is φ = 76710307120.

The previous prime is 157256129659. The next prime is 157256129699. The reversal of 157256129678 is 876921652751.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958878758 + ... + 958878921.

It is an arithmetic number, because the mean of its divisors is an integer number (30204683460).

Almost surely, 2^157256129678 is an apocalyptic number.

157256129678 is a deficient number, since it is larger than the sum of its proper divisors (84381338002).

157256129678 is a wasteful number, since it uses less digits than its factorization.

157256129678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917757722.

The product of its digits is 12700800, while the sum is 59.

The spelling of 157256129678 in words is "one hundred fifty-seven billion, two hundred fifty-six million, one hundred twenty-nine thousand, six hundred seventy-eight".