161461622053 has 4 divisors (see below), whose sum is σ = 161527608000. Its totient is φ = 161395636108.

The previous prime is 161461622011. The next prime is 161461622059. The reversal of 161461622053 is 350226164161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161461622053 - 2²⁵ = 161428067621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161461622059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32989303 + ... + 32994196.

It is an arithmetic number, because the mean of its divisors is an integer number (40381902000).

Almost surely, 2^161461622053 is an apocalyptic number.

It is an amenable number.

161461622053 is a deficient number, since it is larger than the sum of its proper divisors (65985947).

161461622053 is an equidigital number, since it uses as much as digits as its factorization.

161461622053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65985946.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 161461622053 in words is "one hundred sixty-one billion, four hundred sixty-one million, six hundred twenty-two thousand, fifty-three".