238637202961 has 2 divisors, whose sum is σ = 238637202962. Its totient is φ = 238637202960.

The previous prime is 238637202941. The next prime is 238637202967. The reversal of 238637202961 is 169202736832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235752975936 + 2884227025 = 485544^2 + 53705^2 .

It is a cyclic number.

It is not a de Polignac number, because 238637202961 - 2¹³ = 238637194769 is a prime.

It is not a weakly prime, because it can be changed into another prime (238637202967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119318601480 + 119318601481.

It is an arithmetic number, because the mean of its divisors is an integer number (119318601481).

Almost surely, 2^238637202961 is an apocalyptic number.

It is an amenable number.

238637202961 is a deficient number, since it is larger than the sum of its proper divisors (1).

238637202961 is an equidigital number, since it uses as much as digits as its factorization.

238637202961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 238637202961 in words is "two hundred thirty-eight billion, six hundred thirty-seven million, two hundred two thousand, nine hundred sixty-one".