6662739509121 has 16 divisors (see below), whose sum is σ = 9034713941760. Its totient is φ = 4366778332800.

The previous prime is 6662739509081. The next prime is 6662739509131. The reversal of 6662739509121 is 1219059372666.

It is not a de Polignac number, because 6662739509121 - 2⁷ = 6662739508993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6662739509131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60272730 + ... + 60383171.

It is an arithmetic number, because the mean of its divisors is an integer number (564669621360).

Almost surely, 2^{6662739509121} is an apocalyptic number.

It is an amenable number.

6662739509121 is a deficient number, since it is larger than the sum of its proper divisors (2371974432639).

6662739509121 is a wasteful number, since it uses less digits than its factorization.

6662739509121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120656216.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 6662739509121 in words is "six trillion, six hundred sixty-two billion, seven hundred thirty-nine million, five hundred nine thousand, one hundred twenty-one".