261237914053 has 2 divisors, whose sum is σ = 261237914054. Its totient is φ = 261237914052.

The previous prime is 261237914039. The next prime is 261237914083. The reversal of 261237914053 is 350419732162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224238237444 + 36999676609 = 473538^2 + 192353^2 .

It is a cyclic number.

It is not a de Polignac number, because 261237914053 - 2¹³ = 261237905861 is a prime.

It is a super-2 number, since 2×261237914053² (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 (261237914033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130618957026 + 130618957027.

It is an arithmetic number, because the mean of its divisors is an integer number (130618957027).

Almost surely, 2^261237914053 is an apocalyptic number.

It is an amenable number.

261237914053 is a deficient number, since it is larger than the sum of its proper divisors (1).

261237914053 is an equidigital number, since it uses as much as digits as its factorization.

261237914053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 261237914053 in words is "two hundred sixty-one billion, two hundred thirty-seven million, nine hundred fourteen thousand, fifty-three".