6601121257715 has 8 divisors (see below), whose sum is σ = 7999774673328. Its totient is φ = 5228610896800.

The previous prime is 6601121257691. The next prime is 6601121257721. The reversal of 6601121257715 is 5177521211066.

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

It is not a de Polignac number, because 6601121257715 - 2¹⁶ = 6601121192179 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6535763117 + ... + 6535764126.

It is an arithmetic number, because the mean of its divisors is an integer number (999971834166).

Almost surely, 2^{6601121257715} is an apocalyptic number.

6601121257715 is a deficient number, since it is larger than the sum of its proper divisors (1398653415613).

6601121257715 is a wasteful number, since it uses less digits than its factorization.

6601121257715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13071527349.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 6601121257715 in words is "six trillion, six hundred one billion, one hundred twenty-one million, two hundred fifty-seven thousand, seven hundred fifteen".