157535166649 has 9 divisors (see below), whose sum is σ = 183258425871. Its totient is φ = 135027761400.

The previous prime is 157535166631. The next prime is 157535166667. The reversal of 157535166649 is 946661535751.

The square root of 157535166649 is 396907.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (157535166631) and next prime (157535166667).

It can be written as a sum of positive squares in only one way, i.e., 101223876649 + 56311290000 = 318157^2 + 237300^2 .

It is not a de Polignac number, because 157535166649 - 2¹⁹ = 157534642361 is a prime.

It is a super-2 number, since 2×157535166649² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157535166593 and 157535166602.

It is not an unprimeable number, because it can be changed into a prime (157535166629) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2749999 + ... + 2806699.

It is an arithmetic number, because the mean of its divisors is an integer number (20362047319).

Almost surely, 2^157535166649 is an apocalyptic number.

157535166649 is the 396907-th square number.

157535166649 is the 198454-th centered octagonal number.

It is an amenable number.

157535166649 is a deficient number, since it is larger than the sum of its proper divisors (25723259222).

157535166649 is an frugal number, since it uses more digits than its factorization.

157535166649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113416 (or 56708 counting only the distinct ones).

The product of its digits is 20412000, while the sum is 58.

The spelling of 157535166649 in words is "one hundred fifty-seven billion, five hundred thirty-five million, one hundred sixty-six thousand, six hundred forty-nine".