77372607520 has 144 divisors (see below), whose sum is σ = 198654446592. Its totient is φ = 28464583680.

The previous prime is 77372607511. The next prime is 77372607539. The reversal of 77372607520 is 2570627377.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7647265 + ... + 7657375.

It is an arithmetic number, because the mean of its divisors is an integer number (1379544768).

Almost surely, 2^77372607520 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 77372607520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99327223296).

77372607520 is an abundant number, since it is smaller than the sum of its proper divisors (121281839072).

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

77372607520 is a wasteful number, since it uses less digits than its factorization.

77372607520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10435 (or 10414 counting only the distinct ones).

The product of its (nonzero) digits is 864360, while the sum is 46.

The spelling of 77372607520 in words is "seventy-seven billion, three hundred seventy-two million, six hundred seven thousand, five hundred twenty".