2161653442346 has 16 divisors (see below), whose sum is σ = 3378421418400. Its totient is φ = 1036049227248.

The previous prime is 2161653442339. The next prime is 2161653442387. The reversal of 2161653442346 is 6432443561612.

It is a self number, because there is not a number n which added to its sum of digits gives 2161653442346.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134056280 + ... + 134072403.

It is an arithmetic number, because the mean of its divisors is an integer number (211151338650).

Almost surely, 2^{2161653442346} is an apocalyptic number.

2161653442346 is a deficient number, since it is larger than the sum of its proper divisors (1216767976054).

2161653442346 is a wasteful number, since it uses less digits than its factorization.

2161653442346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268128853.

The product of its digits is 2488320, while the sum is 47.

The spelling of 2161653442346 in words is "two trillion, one hundred sixty-one billion, six hundred fifty-three million, four hundred forty-two thousand, three hundred forty-six".