197431485747051 has 4 divisors (see below), whose sum is σ = 263241980996072. Its totient is φ = 131620990498032.

The previous prime is 197431485747037. The next prime is 197431485747073. The reversal of 197431485747051 is 150747584134791.

197431485747051 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 197431485747051 - 2³⁵ = 197397126008683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197431485747011) 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, 32905247624506 + ... + 32905247624511.

It is an arithmetic number, because the mean of its divisors is an integer number (65810495249018).

Almost surely, 2^{197431485747051} is an apocalyptic number.

197431485747051 is a deficient number, since it is larger than the sum of its proper divisors (65810495249021).

197431485747051 is an equidigital number, since it uses as much as digits as its factorization.

197431485747051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65810495249020.

The product of its (nonzero) digits is 118540800, while the sum is 66.

The spelling of 197431485747051 in words is "one hundred ninety-seven trillion, four hundred thirty-one billion, four hundred eighty-five million, seven hundred forty-seven thousand, fifty-one".