276640766399 has 8 divisors (see below), whose sum is σ = 278679300480. Its totient is φ = 274602922776.

The previous prime is 276640766383. The next prime is 276640766401. The reversal of 276640766399 is 993667046672.

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 276640766399 - 2⁴ = 276640766383 is a prime.

It is a super-2 number, since 2×276640766399² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276640766599) 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, 645902 + ... + 985124.

It is an arithmetic number, because the mean of its divisors is an integer number (34834912560).

Almost surely, 2^276640766399 is an apocalyptic number.

276640766399 is a deficient number, since it is larger than the sum of its proper divisors (2038534081).

276640766399 is a wasteful number, since it uses less digits than its factorization.

276640766399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345229.

The product of its (nonzero) digits is 123451776, while the sum is 65.

The spelling of 276640766399 in words is "two hundred seventy-six billion, six hundred forty million, seven hundred sixty-six thousand, three hundred ninety-nine".