340160401661 has 4 divisors (see below), whose sum is σ = 340167574524. Its totient is φ = 340153228800.

The previous prime is 340160401643. The next prime is 340160401687. The reversal of 340160401661 is 166104061043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166104061043 = 431 ⋅385392253.

It can be written as a sum of positive squares in 2 ways, for example, as 69791600761 + 270368800900 = 264181^2 + 519970^2 .

It is a cyclic number.

It is not a de Polignac number, because 340160401661 - 2¹⁴ = 340160385277 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 (340160401961) 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, 3514820 + ... + 3610301.

It is an arithmetic number, because the mean of its divisors is an integer number (85041893631).

Almost surely, 2^340160401661 is an apocalyptic number.

It is an amenable number.

340160401661 is a deficient number, since it is larger than the sum of its proper divisors (7172863).

340160401661 is an equidigital number, since it uses as much as digits as its factorization.

340160401661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7172862.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 340160401661 in words is "three hundred forty billion, one hundred sixty million, four hundred one thousand, six hundred sixty-one".