157869668749 has 8 divisors (see below), whose sum is σ = 175876023960. Its totient is φ = 140700818496.

The previous prime is 157869668741. The next prime is 157869668773. The reversal of 157869668749 is 947866968751.

157869668749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 294808900 + 157574859849 = 17170^2 + 396957^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 157869668749 - 2³ = 157869668741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157869668741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209375842 + ... + 209376595.

It is an arithmetic number, because the mean of its divisors is an integer number (21984502995).

Almost surely, 2^157869668749 is an apocalyptic number.

It is an amenable number.

157869668749 is a deficient number, since it is larger than the sum of its proper divisors (18006355211).

157869668749 is a wasteful number, since it uses less digits than its factorization.

157869668749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418752479.

The product of its digits is 1097349120, while the sum is 76.

The spelling of 157869668749 in words is "one hundred fifty-seven billion, eight hundred sixty-nine million, six hundred sixty-eight thousand, seven hundred forty-nine".