161161505150659 has 16 divisors (see below), whose sum is σ = 173706108472512. Its totient is φ = 148637990412288.

The previous prime is 161161505150549. The next prime is 161161505150671. The reversal of 161161505150659 is 956051505161161.

It is not a de Polignac number, because 161161505150659 - 2⁹ = 161161505150147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161161505150689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545140227 + ... + 545435779.

It is an arithmetic number, because the mean of its divisors is an integer number (10856631779532).

Almost surely, 2^{161161505150659} is an apocalyptic number.

161161505150659 is a deficient number, since it is larger than the sum of its proper divisors (12544603321853).

161161505150659 is a wasteful number, since it uses less digits than its factorization.

161161505150659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331086.

The product of its (nonzero) digits is 1215000, while the sum is 52.

The spelling of 161161505150659 in words is "one hundred sixty-one trillion, one hundred sixty-one billion, five hundred five million, one hundred fifty thousand, six hundred fifty-nine".