197156039503 has 2 divisors, whose sum is σ = 197156039504. Its totient is φ = 197156039502.

The previous prime is 197156039467. The next prime is 197156039527. The reversal of 197156039503 is 305930651791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197156039503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197156034503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98578019751 + 98578019752.

It is an arithmetic number, because the mean of its divisors is an integer number (98578019752).

Almost surely, 2^197156039503 is an apocalyptic number.

197156039503 is a deficient number, since it is larger than the sum of its proper divisors (1).

197156039503 is an equidigital number, since it uses as much as digits as its factorization.

197156039503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 765450, while the sum is 49.

The spelling of 197156039503 in words is "one hundred ninety-seven billion, one hundred fifty-six million, thirty-nine thousand, five hundred three".