197153157671 has 4 divisors (see below), whose sum is σ = 197236805832. Its totient is φ = 197069509512.

The previous prime is 197153157661. The next prime is 197153157679. The reversal of 197153157671 is 176751351791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 197153157671 - 2²² = 197148963367 is a prime.

It is a super-2 number, since 2×197153157671² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197153157679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41820545 + ... + 41825258.

It is an arithmetic number, because the mean of its divisors is an integer number (49309201458).

Almost surely, 2^197153157671 is an apocalyptic number.

197153157671 is a deficient number, since it is larger than the sum of its proper divisors (83648161).

197153157671 is an equidigital number, since it uses as much as digits as its factorization.

197153157671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83648160.

The product of its digits is 1389150, while the sum is 53.

It can be divided in two parts, 1971531 and 57671, that added together give a palindrome (2029202).

The spelling of 197153157671 in words is "one hundred ninety-seven billion, one hundred fifty-three million, one hundred fifty-seven thousand, six hundred seventy-one".