8151660121 has 8 divisors (see below), whose sum is σ = 9014539104. Its totient is φ = 7309084320.

The previous prime is 8151660067. The next prime is 8151660137. The reversal of 8151660121 is 1210661518.

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 8151660121 - 2¹⁹ = 8151135833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8151660821) 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, 5074951 + ... + 5076556.

It is an arithmetic number, because the mean of its divisors is an integer number (1126817388).

Almost surely, 2^8151660121 is an apocalyptic number.

It is an amenable number.

8151660121 is a deficient number, since it is larger than the sum of its proper divisors (862878983).

8151660121 is a wasteful number, since it uses less digits than its factorization.

8151660121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10151591.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 8151660121 is about 90286.5445179956. The cubic root of 8151660121 is about 2012.5593101922.

The spelling of 8151660121 in words is "eight billion, one hundred fifty-one million, six hundred sixty thousand, one hundred twenty-one".