86129990741 has 2 divisors, whose sum is σ = 86129990742. Its totient is φ = 86129990740.

The previous prime is 86129990729. The next prime is 86129990747. The reversal of 86129990741 is 14709992168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65597966641 + 20532024100 = 256121^2 + 143290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86129990741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86129990747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43064995370 + 43064995371.

It is an arithmetic number, because the mean of its divisors is an integer number (43064995371).

Almost surely, 2^86129990741 is an apocalyptic number.

It is an amenable number.

86129990741 is a deficient number, since it is larger than the sum of its proper divisors (1).

86129990741 is an equidigital number, since it uses as much as digits as its factorization.

86129990741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The spelling of 86129990741 in words is "eighty-six billion, one hundred twenty-nine million, nine hundred ninety thousand, seven hundred forty-one".