238542685501 has 2 divisors, whose sum is σ = 238542685502. Its totient is φ = 238542685500.

The previous prime is 238542685457. The next prime is 238542685517. The reversal of 238542685501 is 105586245832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232395341476 + 6147344025 = 482074^2 + 78405^2 .

It is a cyclic number.

It is not a de Polignac number, because 238542685501 - 2¹⁷ = 238542554429 is a prime.

It is a super-2 number, since 2×238542685501² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238542685531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119271342750 + 119271342751.

It is an arithmetic number, because the mean of its divisors is an integer number (119271342751).

Almost surely, 2^238542685501 is an apocalyptic number.

It is an amenable number.

238542685501 is a deficient number, since it is larger than the sum of its proper divisors (1).

238542685501 is an equidigital number, since it uses as much as digits as its factorization.

238542685501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304000, while the sum is 49.

The spelling of 238542685501 in words is "two hundred thirty-eight billion, five hundred forty-two million, six hundred eighty-five thousand, five hundred one".