76645454840 has 32 divisors (see below), whose sum is σ = 179950200480. Its totient is φ = 29325217152.

The previous prime is 76645454827. The next prime is 76645454843. The reversal of 76645454840 is 4845454667.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76645454843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41654219 + ... + 41656058.

It is an arithmetic number, because the mean of its divisors is an integer number (5623443765).

Almost surely, 2^76645454840 is an apocalyptic number.

It is an amenable number.

76645454840 is an abundant number, since it is smaller than the sum of its proper divisors (103304745640).

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

76645454840 is a wasteful number, since it uses less digits than its factorization.

76645454840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83310311 (or 83310307 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 53.

The spelling of 76645454840 in words is "seventy-six billion, six hundred forty-five million, four hundred fifty-four thousand, eight hundred forty".