76450781824 has 32 divisors (see below), whose sum is σ = 157556171700. Its totient is φ = 36907272192.

The previous prime is 76450781809. The next prime is 76450781833. The reversal of 76450781824 is 42818705467.

It can be written as a sum of positive squares in 2 ways, for example, as 72163151424 + 4287630400 = 268632^2 + 65480^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10294077 + ... + 10301500.

Almost surely, 2^76450781824 is an apocalyptic number.

It is an amenable number.

76450781824 is an abundant number, since it is smaller than the sum of its proper divisors (81105389876).

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

76450781824 is a wasteful number, since it uses less digits than its factorization.

76450781824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20595620 (or 20595608 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 76450781824 in words is "seventy-six billion, four hundred fifty million, seven hundred eighty-one thousand, eight hundred twenty-four".