76003642640 has 80 divisors (see below), whose sum is σ = 179495118720. Its totient is φ = 29923461120.

The previous prime is 76003642567. The next prime is 76003642691. The reversal of 76003642640 is 4624630067.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 76003642594 and 76003642603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3505112 + ... + 3526728.

It is an arithmetic number, because the mean of its divisors is an integer number (2243688984).

Almost surely, 2^76003642640 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 76003642640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89747559360).

76003642640 is an abundant number, since it is smaller than the sum of its proper divisors (103491476080).

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

76003642640 is a wasteful number, since it uses less digits than its factorization.

76003642640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22320 (or 22314 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 38.

The spelling of 76003642640 in words is "seventy-six billion, three million, six hundred forty-two thousand, six hundred forty".