6610228072921 has 8 divisors (see below), whose sum is σ = 7211230941600. Its totient is φ = 6009237378240.

The previous prime is 6610228072913. The next prime is 6610228072927. The reversal of 6610228072921 is 1292708220166.

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 6610228072921 - 2³ = 6610228072913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6610228072927) 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, 1889136 + ... + 4097473.

It is an arithmetic number, because the mean of its divisors is an integer number (901403867700).

Almost surely, 2^{6610228072921} is an apocalyptic number.

It is an amenable number.

6610228072921 is a deficient number, since it is larger than the sum of its proper divisors (601002868679).

6610228072921 is a wasteful number, since it uses less digits than its factorization.

6610228072921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086999.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 6610228072921 in words is "six trillion, six hundred ten billion, two hundred twenty-eight million, seventy-two thousand, nine hundred twenty-one".