241921947991951 has 2 divisors, whose sum is σ = 241921947991952. Its totient is φ = 241921947991950.

The previous prime is 241921947991819. The next prime is 241921947991967. The reversal of 241921947991951 is 159199749129142.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 241921947991951 - 2³⁹ = 241372192178063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241921947901951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120960973995975 + 120960973995976.

It is an arithmetic number, because the mean of its divisors is an integer number (120960973995976).

Almost surely, 2^{241921947991951} is an apocalyptic number.

241921947991951 is a deficient number, since it is larger than the sum of its proper divisors (1).

241921947991951 is an equidigital number, since it uses as much as digits as its factorization.

241921947991951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132269760, while the sum is 73.

The spelling of 241921947991951 in words is "two hundred forty-one trillion, nine hundred twenty-one billion, nine hundred forty-seven million, nine hundred ninety-one thousand, nine hundred fifty-one".