161445735642 has 32 divisors (see below), whose sum is σ = 326793297600. Its totient is φ = 53167788288.

The previous prime is 161445735637. The next prime is 161445735679. The reversal of 161445735642 is 246537544161.

It is a junction number, because it is equal to n+sod(n) for n = 161445735591 and 161445735600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128767 + ... + 582642.

It is an arithmetic number, because the mean of its divisors is an integer number (10212290550).

Almost surely, 2^161445735642 is an apocalyptic number.

161445735642 is an abundant number, since it is smaller than the sum of its proper divisors (165347561958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161445735642 is a wasteful number, since it uses less digits than its factorization.

161445735642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711870.

The product of its digits is 2419200, while the sum is 48.

The spelling of 161445735642 in words is "one hundred sixty-one billion, four hundred forty-five million, seven hundred thirty-five thousand, six hundred forty-two".