86250738689261 has 2 divisors, whose sum is σ = 86250738689262. Its totient is φ = 86250738689260.

The previous prime is 86250738689257. The next prime is 86250738689279. The reversal of 86250738689261 is 16298683705268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63721998551236 + 22528740138025 = 7982606^2 + 4746445^2 .

It is a cyclic number.

It is not a de Polignac number, because 86250738689261 - 2² = 86250738689257 is a prime.

It is a super-2 number, since 2×86250738689261² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86250738689461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43125369344630 + 43125369344631.

It is an arithmetic number, because the mean of its divisors is an integer number (43125369344631).

Almost surely, 2^{86250738689261} is an apocalyptic number.

It is an amenable number.

86250738689261 is a deficient number, since it is larger than the sum of its proper divisors (1).

86250738689261 is an equidigital number, since it uses as much as digits as its factorization.

86250738689261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 418037760, while the sum is 71.

The spelling of 86250738689261 in words is "eighty-six trillion, two hundred fifty billion, seven hundred thirty-eight million, six hundred eighty-nine thousand, two hundred sixty-one".