276640640425 has 24 divisors (see below), whose sum is σ = 350514547776. Its totient is φ = 216510690240.

The previous prime is 276640640407. The next prime is 276640640429. The reversal of 276640640425 is 524046046672.

It is a de Polignac number, because none of the positive numbers 2^k-276640640425 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276640640429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158932 + ... + 760618.

It is an arithmetic number, because the mean of its divisors is an integer number (14604772824).

Almost surely, 2^276640640425 is an apocalyptic number.

276640640425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

276640640425 is a deficient number, since it is larger than the sum of its proper divisors (73873907351).

276640640425 is a wasteful number, since it uses less digits than its factorization.

276640640425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602097 (or 602092 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 46.

The spelling of 276640640425 in words is "two hundred seventy-six billion, six hundred forty million, six hundred forty thousand, four hundred twenty-five".