161478661343 has 8 divisors (see below), whose sum is σ = 161658372480. Its totient is φ = 161299053720.

The previous prime is 161478661339. The next prime is 161478661367. The reversal of 161478661343 is 343166874161.

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

It is a cyclic number.

It is not a de Polignac number, because 161478661343 - 2² = 161478661339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161478661291 and 161478661300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161478664343) 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, 3333728 + ... + 3381818.

It is an arithmetic number, because the mean of its divisors is an integer number (20207296560).

Almost surely, 2^161478661343 is an apocalyptic number.

161478661343 is a deficient number, since it is larger than the sum of its proper divisors (179711137).

161478661343 is a wasteful number, since it uses less digits than its factorization.

161478661343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51757.

The product of its digits is 1741824, while the sum is 50.

The spelling of 161478661343 in words is "one hundred sixty-one billion, four hundred seventy-eight million, six hundred sixty-one thousand, three hundred forty-three".