157707124849 has 16 divisors (see below), whose sum is σ = 168545247120. Its totient is φ = 147043778560.

The previous prime is 157707124741. The next prime is 157707124859. The reversal of 157707124849 is 948421707751.

It can be written as a sum of positive squares in 8 ways, for example, as 29732794624 + 127974330225 = 172432^2 + 357735^2 .

It is a cyclic number.

It is not a de Polignac number, because 157707124849 - 2³⁷ = 20268171377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157707124849.

It is not an unprimeable number, because it can be changed into a prime (157707124859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4070529 + ... + 4109089.

It is an arithmetic number, because the mean of its divisors is an integer number (10534077945).

Almost surely, 2^157707124849 is an apocalyptic number.

It is an amenable number.

157707124849 is a deficient number, since it is larger than the sum of its proper divisors (10838122271).

157707124849 is a wasteful number, since it uses less digits than its factorization.

157707124849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40820.

The product of its (nonzero) digits is 3951360, while the sum is 55.

The spelling of 157707124849 in words is "one hundred fifty-seven billion, seven hundred seven million, one hundred twenty-four thousand, eight hundred forty-nine".