161477264129 has 2 divisors, whose sum is σ = 161477264130. Its totient is φ = 161477264128.

The previous prime is 161477264119. The next prime is 161477264147. The reversal of 161477264129 is 921462774161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155825983504 + 5651280625 = 394748^2 + 75175^2 .

It is a cyclic number.

It is not a de Polignac number, because 161477264129 - 2¹⁶ = 161477198593 is a prime.

It is not a weakly prime, because it can be changed into another prime (161477264119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80738632064 + 80738632065.

It is an arithmetic number, because the mean of its divisors is an integer number (80738632065).

Almost surely, 2^161477264129 is an apocalyptic number.

It is an amenable number.

161477264129 is a deficient number, since it is larger than the sum of its proper divisors (1).

161477264129 is an equidigital number, since it uses as much as digits as its factorization.

161477264129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The spelling of 161477264129 in words is "one hundred sixty-one billion, four hundred seventy-seven million, two hundred sixty-four thousand, one hundred twenty-nine".