6147998121 has 8 divisors (see below), whose sum is σ = 8200235680. Its totient is φ = 4097212992.

The previous prime is 6147998111. The next prime is 6147998123. The reversal of 6147998121 is 1218997416.

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

It is not a de Polignac number, because 6147998121 - 2⁷ = 6147997993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6147998123) 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, 353191 + ... + 370188.

It is an arithmetic number, because the mean of its divisors is an integer number (1025029460).

Almost surely, 2^6147998121 is an apocalyptic number.

It is an amenable number.

6147998121 is a deficient number, since it is larger than the sum of its proper divisors (2052237559).

6147998121 is a wasteful number, since it uses less digits than its factorization.

6147998121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726215.

The product of its digits is 217728, while the sum is 48.

The square root of 6147998121 is about 78409.1711536348. The cubic root of 6147998121 is about 1831.9399854524.

The spelling of 6147998121 in words is "six billion, one hundred forty-seven million, nine hundred ninety-eight thousand, one hundred twenty-one".