276788243840 has 32 divisors (see below), whose sum is σ = 661696896960. Its totient is φ = 110715297280.

The previous prime is 276788243803. The next prime is 276788243843. The reversal of 276788243840 is 48342887672.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×276788243840² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 276788243840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276788243843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216240176 + ... + 216241455.

It is an arithmetic number, because the mean of its divisors is an integer number (20678028030).

Almost surely, 2^276788243840 is an apocalyptic number.

276788243840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

276788243840 is an abundant number, since it is smaller than the sum of its proper divisors (384908653120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

276788243840 is an equidigital number, since it uses as much as digits as its factorization.

276788243840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432481650 (or 432481638 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 59.

The spelling of 276788243840 in words is "two hundred seventy-six billion, seven hundred eighty-eight million, two hundred forty-three thousand, eight hundred forty".