162561011466397 has 2 divisors, whose sum is σ = 162561011466398. Its totient is φ = 162561011466396.

The previous prime is 162561011466299. The next prime is 162561011466409. The reversal of 162561011466397 is 793664110165261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108798960094276 + 53762051372121 = 10430674^2 + 7332261^2 .

It is a cyclic number.

It is not a de Polignac number, because 162561011466397 - 2¹¹ = 162561011464349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162561011466797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81280505733198 + 81280505733199.

It is an arithmetic number, because the mean of its divisors is an integer number (81280505733199).

Almost surely, 2^{162561011466397} is an apocalyptic number.

It is an amenable number.

162561011466397 is a deficient number, since it is larger than the sum of its proper divisors (1).

162561011466397 is an equidigital number, since it uses as much as digits as its factorization.

162561011466397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 162561011466397 in words is "one hundred sixty-two trillion, five hundred sixty-one billion, eleven million, four hundred sixty-six thousand, three hundred ninety-seven".