2758378667 has 8 divisors (see below), whose sum is σ = 3106209792. Its totient is φ = 2426725800.

The previous prime is 2758378633. The next prime is 2758378681. The reversal of 2758378667 is 7668738572.

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 2758378667 - 2⁶ = 2758378603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2758378697) 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, 4044203 + ... + 4044884.

It is an arithmetic number, because the mean of its divisors is an integer number (388276224).

Almost surely, 2^2758378667 is an apocalyptic number.

2758378667 is a deficient number, since it is larger than the sum of its proper divisors (347831125).

2758378667 is a wasteful number, since it uses less digits than its factorization.

2758378667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8089129.

The product of its digits is 23708160, while the sum is 59.

The square root of 2758378667 is about 52520.2691063174. The cubic root of 2758378667 is about 1402.4410926757.

The spelling of 2758378667 in words is "two billion, seven hundred fifty-eight million, three hundred seventy-eight thousand, six hundred sixty-seven".