2121616522646 has 8 divisors (see below), whose sum is σ = 3285083648064. Its totient is φ = 1026588639960.

The previous prime is 2121616522643. The next prime is 2121616522667. The reversal of 2121616522646 is 6462256161212.

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

It is a junction number, because it is equal to n+sod(n) for n = 2121616522597 and 2121616522606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121616522643) 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, 17109810605 + ... + 17109810728.

It is an arithmetic number, because the mean of its divisors is an integer number (410635456008).

Almost surely, 2^{2121616522646} is an apocalyptic number.

2121616522646 is a deficient number, since it is larger than the sum of its proper divisors (1163467125418).

2121616522646 is a wasteful number, since it uses less digits than its factorization.

2121616522646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34219621366.

The product of its digits is 414720, while the sum is 44.

The spelling of 2121616522646 in words is "two trillion, one hundred twenty-one billion, six hundred sixteen million, five hundred twenty-two thousand, six hundred forty-six".