2151206679 has 8 divisors (see below), whose sum is σ = 2868697840. Its totient is φ = 1433926656.

The previous prime is 2151206647. The next prime is 2151206711. The reversal of 2151206679 is 9766021512.

It is an interprime number because it is at equal distance from previous prime (2151206647) and next prime (2151206711).

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

It is not a de Polignac number, because 2151206679 - 2⁵ = 2151206647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151206609) 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, 27244 + ... + 71025.

It is an arithmetic number, because the mean of its divisors is an integer number (358587230).

Almost surely, 2^2151206679 is an apocalyptic number.

2151206679 is a deficient number, since it is larger than the sum of its proper divisors (717491161).

2151206679 is an equidigital number, since it uses as much as digits as its factorization.

2151206679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105569.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 2151206679 is about 46381.1026065573. The cubic root of 2151206679 is about 1290.9042953284.

The spelling of 2151206679 in words is "two billion, one hundred fifty-one million, two hundred six thousand, six hundred seventy-nine".