86730622621 has 2 divisors, whose sum is σ = 86730622622. Its totient is φ = 86730622620.

The previous prime is 86730622619. The next prime is 86730622631. The reversal of 86730622621 is 12622603768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46090078596 + 40640544025 = 214686^2 + 201595^2 .

It is a cyclic number.

It is not a de Polignac number, because 86730622621 - 2¹ = 86730622619 is a prime.

Together with 86730622619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86730622631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43365311310 + 43365311311.

It is an arithmetic number, because the mean of its divisors is an integer number (43365311311).

Almost surely, 2^86730622621 is an apocalyptic number.

It is an amenable number.

86730622621 is a deficient number, since it is larger than the sum of its proper divisors (1).

86730622621 is an equidigital number, since it uses as much as digits as its factorization.

86730622621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 86730622621 in words is "eighty-six billion, seven hundred thirty million, six hundred twenty-two thousand, six hundred twenty-one".