76621676544 has 360 divisors, whose sum is σ = 261874565568. Its totient is φ = 21870673920.

The previous prime is 76621676513. The next prime is 76621676569. The reversal of 76621676544 is 44567612667.

76621676544 is a `hidden beast` number, since 7 + 6 + 6 + 21 + 6 + 76 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74317309 + ... + 74318339.

Almost surely, 2^76621676544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76621676544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130937282784).

76621676544 is an abundant number, since it is smaller than the sum of its proper divisors (185252889024).

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

76621676544 is an frugal number, since it uses more digits than its factorization.

76621676544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084 (or 1043 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The spelling of 76621676544 in words is "seventy-six billion, six hundred twenty-one million, six hundred seventy-six thousand, five hundred forty-four".