161247545542 has 8 divisors (see below), whose sum is σ = 241932301056. Its totient is φ = 80603445192.

The previous prime is 161247545533. The next prime is 161247545567. The reversal of 161247545542 is 245545742161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 161247545492 and 161247545501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10153873 + ... + 10169740.

It is an arithmetic number, because the mean of its divisors is an integer number (30241537632).

Almost surely, 2^161247545542 is an apocalyptic number.

161247545542 is a deficient number, since it is larger than the sum of its proper divisors (80684755514).

161247545542 is a wasteful number, since it uses less digits than its factorization.

161247545542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20327582.

The product of its digits is 1344000, while the sum is 46.

The spelling of 161247545542 in words is "one hundred sixty-one billion, two hundred forty-seven million, five hundred forty-five thousand, five hundred forty-two".