161070043563 has 32 divisors (see below), whose sum is σ = 280339476480. Its totient is φ = 90109113120.

The previous prime is 161070043553. The next prime is 161070043597. The reversal of 161070043563 is 365340070161.

161070043563 is a `hidden beast` number, since 1 + 610 + 7 + 0 + 0 + 4 + 35 + 6 + 3 = 666.

It is not a de Polignac number, because 161070043563 - 2⁸ = 161070043307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161070043513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20854731 + ... + 20862452.

It is an arithmetic number, because the mean of its divisors is an integer number (8760608640).

Almost surely, 2^161070043563 is an apocalyptic number.

161070043563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

161070043563 is a deficient number, since it is larger than the sum of its proper divisors (119269432917).

161070043563 is a wasteful number, since it uses less digits than its factorization.

161070043563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41717216 (or 41717210 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 161070043563 in words is "one hundred sixty-one billion, seventy million, forty-three thousand, five hundred sixty-three".