77253206380 has 96 divisors (see below), whose sum is σ = 193661798400. Its totient is φ = 25309954560.

The previous prime is 77253206353. The next prime is 77253206399. The reversal of 77253206380 is 8360235277.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3366345 + ... + 3389215.

It is an arithmetic number, because the mean of its divisors is an integer number (2017310400).

Almost surely, 2^77253206380 is an apocalyptic number.

77253206380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77253206380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96830899200).

77253206380 is an abundant number, since it is smaller than the sum of its proper divisors (116408592020).

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

77253206380 is a wasteful number, since it uses less digits than its factorization.

77253206380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23959 (or 23957 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 77253206380 in words is "seventy-seven billion, two hundred fifty-three million, two hundred six thousand, three hundred eighty".