2161642623454 has 8 divisors (see below), whose sum is σ = 3258757724400. Its totient is φ = 1075390048656.

The previous prime is 2161642623433. The next prime is 2161642623527. The reversal of 2161642623454 is 4543262461612.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2715631039 + ... + 2715631834.

It is an arithmetic number, because the mean of its divisors is an integer number (407344715550).

Almost surely, 2^{2161642623454} is an apocalyptic number.

2161642623454 is a deficient number, since it is larger than the sum of its proper divisors (1097115100946).

2161642623454 is a wasteful number, since it uses less digits than its factorization.

2161642623454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431263074.

The product of its digits is 1658880, while the sum is 46.

The spelling of 2161642623454 in words is "two trillion, one hundred sixty-one billion, six hundred forty-two million, six hundred twenty-three thousand, four hundred fifty-four".