157213310197 has 8 divisors (see below), whose sum is σ = 159374207000. Its totient is φ = 155052610560.

The previous prime is 157213310173. The next prime is 157213310201. The reversal of 157213310197 is 791013312751.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55014171601 + 102199138596 = 234551^2 + 319686^2 .

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 157213310197 - 2³⁵ = 122853571829 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 (157213310897) 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, 2357797 + ... + 2423557.

It is an arithmetic number, because the mean of its divisors is an integer number (19921775875).

Almost surely, 2^157213310197 is an apocalyptic number.

It is an amenable number.

157213310197 is a deficient number, since it is larger than the sum of its proper divisors (2160896803).

157213310197 is an equidigital number, since it uses as much as digits as its factorization.

157213310197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98583.

The product of its (nonzero) digits is 39690, while the sum is 40.

The spelling of 157213310197 in words is "one hundred fifty-seven billion, two hundred thirteen million, three hundred ten thousand, one hundred ninety-seven".