157896668247 has 8 divisors (see below), whose sum is σ = 210768950256. Its totient is φ = 105144415872.

The previous prime is 157896668227. The next prime is 157896668269. The reversal of 157896668247 is 742866698751.

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

It is not a de Polignac number, because 157896668247 - 2⁸ = 157896667991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157896668227) 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, 30004338 + ... + 30009599.

It is an arithmetic number, because the mean of its divisors is an integer number (26346118782).

Almost surely, 2^157896668247 is an apocalyptic number.

157896668247 is a deficient number, since it is larger than the sum of its proper divisors (52872282009).

157896668247 is an equidigital number, since it uses as much as digits as its factorization.

157896668247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60014817.

The product of its digits is 243855360, while the sum is 69.

The spelling of 157896668247 in words is "one hundred fifty-seven billion, eight hundred ninety-six million, six hundred sixty-eight thousand, two hundred forty-seven".