2120643623 has 8 divisors (see below), whose sum is σ = 2423871648. Its totient is φ = 1817485344.

The previous prime is 2120643583. The next prime is 2120643643. The reversal of 2120643623 is 3263460212.

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 2120643623 - 2⁶ = 2120643559 is a prime.

It is a super-2 number, since 2×2120643623² = 8994258751541132258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120643643) 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, 105965 + ... + 124377.

It is an arithmetic number, because the mean of its divisors is an integer number (302983956).

Almost surely, 2^2120643623 is an apocalyptic number.

2120643623 is a deficient number, since it is larger than the sum of its proper divisors (303228025).

2120643623 is a wasteful number, since it uses less digits than its factorization.

2120643623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34873.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 2120643623 is about 46050.4465016356. The cubic root of 2120643623 is about 1284.7616474645.

The spelling of 2120643623 in words is "two billion, one hundred twenty million, six hundred forty-three thousand, six hundred twenty-three".