76324655672820 has 72 divisors (see below), whose sum is σ = 231529014970344. Its totient is φ = 20352283907328.

The previous prime is 76324655672809. The next prime is 76324655672843. The reversal of 76324655672820 is 2827655642367.

76324655672820 is a `hidden beast` number, since 7 + 6 + 3 + 2 + 4 + 6 + 556 + 72 + 8 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17232863076 + 76307422809744 = 131274^2 + 8735412^2 .

It is a super-3 number, since 3×76324655672820³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6134559 + ... + 13794278.

It is an arithmetic number, because the mean of its divisors is an integer number (3215680763477).

Almost surely, 2^{76324655672820} is an apocalyptic number.

It is an amenable number.

76324655672820 is an abundant number, since it is smaller than the sum of its proper divisors (155204359297524).

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

76324655672820 is a wasteful number, since it uses less digits than its factorization.

76324655672820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19950129 (or 19950124 counting only the distinct ones).

The product of its (nonzero) digits is 203212800, while the sum is 63.

The spelling of 76324655672820 in words is "seventy-six trillion, three hundred twenty-four billion, six hundred fifty-five million, six hundred seventy-two thousand, eight hundred twenty".