16122061651639 has 2 divisors, whose sum is σ = 16122061651640. Its totient is φ = 16122061651638.

The previous prime is 16122061651627. The next prime is 16122061651693. The reversal of 16122061651639 is 93615616022161.

Together with next prime (16122061651693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16122061651639 - 2²¹ = 16122059554487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16122061651592 and 16122061651601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16122061351639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8061030825819 + 8061030825820.

It is an arithmetic number, because the mean of its divisors is an integer number (8061030825820).

Almost surely, 2^{16122061651639} is an apocalyptic number.

16122061651639 is a deficient number, since it is larger than the sum of its proper divisors (1).

16122061651639 is an equidigital number, since it uses as much as digits as its factorization.

16122061651639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 16122061651639 in words is "sixteen trillion, one hundred twenty-two billion, sixty-one million, six hundred fifty-one thousand, six hundred thirty-nine".