161225954846 has 8 divisors (see below), whose sum is σ = 263824289784. Its totient is φ = 73284524920.

The previous prime is 161225954839. The next prime is 161225954861. The reversal of 161225954846 is 648459522161.

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

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, 3664226225 + ... + 3664226268.

It is an arithmetic number, because the mean of its divisors is an integer number (32978036223).

Almost surely, 2^161225954846 is an apocalyptic number.

161225954846 is a deficient number, since it is larger than the sum of its proper divisors (102598334938).

161225954846 is a wasteful number, since it uses less digits than its factorization.

161225954846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7328452506.

The product of its digits is 4147200, while the sum is 53.

The spelling of 161225954846 in words is "one hundred sixty-one billion, two hundred twenty-five million, nine hundred fifty-four thousand, eight hundred forty-six".