161477634907 has 2 divisors, whose sum is σ = 161477634908. Its totient is φ = 161477634906.

The previous prime is 161477634887. The next prime is 161477634973. The reversal of 161477634907 is 709436774161.

161477634907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161477634907 is a prime.

It is not a weakly prime, because it can be changed into another prime (161477634107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80738817453 + 80738817454.

It is an arithmetic number, because the mean of its divisors is an integer number (80738817454).

Almost surely, 2^161477634907 is an apocalyptic number.

161477634907 is a deficient number, since it is larger than the sum of its proper divisors (1).

161477634907 is an equidigital number, since it uses as much as digits as its factorization.

161477634907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 161477634907 in words is "one hundred sixty-one billion, four hundred seventy-seven million, six hundred thirty-four thousand, nine hundred seven".