161011325546 has 16 divisors (see below), whose sum is σ = 249960970440. Its totient is φ = 77693575680.

The previous prime is 161011325477. The next prime is 161011325549. The reversal of 161011325546 is 645523110161.

It can be written as a sum of positive squares in 4 ways, for example, as 153341944921 + 7669380625 = 391589^2 + 87575^2 .

It is not an unprimeable number, because it can be changed into a prime (161011325549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516971 + ... + 767646.

Almost surely, 2^161011325546 is an apocalyptic number.

161011325546 is a deficient number, since it is larger than the sum of its proper divisors (88949644894).

161011325546 is a wasteful number, since it uses less digits than its factorization.

161011325546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286809.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 161011325546 in words is "one hundred sixty-one billion, eleven million, three hundred twenty-five thousand, five hundred forty-six".