73779785480 has 128 divisors (see below), whose sum is σ = 181745510400. Its totient is φ = 26869708800.

The previous prime is 73779785467. The next prime is 73779785531. The reversal of 73779785480 is 8458797737.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1718516 + ... + 1760924.

It is an arithmetic number, because the mean of its divisors is an integer number (1419886800).

Almost surely, 2^73779785480 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 73779785480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90872755200).

73779785480 is an abundant number, since it is smaller than the sum of its proper divisors (107965724920).

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

73779785480 is a wasteful number, since it uses less digits than its factorization.

73779785480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42535 (or 42531 counting only the distinct ones).

The product of its (nonzero) digits is 82978560, while the sum is 65.

The spelling of 73779785480 in words is "seventy-three billion, seven hundred seventy-nine million, seven hundred eighty-five thousand, four hundred eighty".