157087616197 has 4 divisors (see below), whose sum is σ = 157088439180. Its totient is φ = 157086793216.

The previous prime is 157087616183. The next prime is 157087616207. The reversal of 157087616197 is 791616780751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 791616780751 = 367 ⋅2156993953.

It can be written as a sum of positive squares in 2 ways, for example, as 93948993121 + 63138623076 = 306511^2 + 251274^2 .

It is a cyclic number.

It is not a de Polignac number, because 157087616197 - 2⁷ = 157087616069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157087616117) by changing a digit.

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, 39813 + ... + 561925.

It is an arithmetic number, because the mean of its divisors is an integer number (39272109795).

Almost surely, 2^157087616197 is an apocalyptic number.

It is an amenable number.

157087616197 is a deficient number, since it is larger than the sum of its proper divisors (822983).

157087616197 is an equidigital number, since it uses as much as digits as its factorization.

157087616197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822982.

The product of its (nonzero) digits is 4445280, while the sum is 58.

The spelling of 157087616197 in words is "one hundred fifty-seven billion, eighty-seven million, six hundred sixteen thousand, one hundred ninety-seven".