197740701541 has 4 divisors (see below), whose sum is σ = 209372507532. Its totient is φ = 186108895552.

The previous prime is 197740701539. The next prime is 197740701559. The reversal of 197740701541 is 145107047791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145107047791 = 257 ⋅564618863.

It can be written as a sum of positive squares in 2 ways, for example, as 151889472900 + 45851228641 = 389730^2 + 214129^2 .

It is a cyclic number.

It is not a de Polignac number, because 197740701541 - 2¹ = 197740701539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197740701491 and 197740701500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197740701241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5815902970 + ... + 5815903003.

It is an arithmetic number, because the mean of its divisors is an integer number (52343126883).

Almost surely, 2^197740701541 is an apocalyptic number.

It is an amenable number.

197740701541 is a deficient number, since it is larger than the sum of its proper divisors (11631805991).

197740701541 is a wasteful number, since it uses less digits than its factorization.

197740701541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11631805990.

The product of its (nonzero) digits is 246960, while the sum is 46.

The spelling of 197740701541 in words is "one hundred ninety-seven billion, seven hundred forty million, seven hundred one thousand, five hundred forty-one".