77489272830 has 32 divisors (see below), whose sum is σ = 186287913504. Its totient is φ = 20628955136.

The previous prime is 77489272829. The next prime is 77489272831. The reversal of 77489272830 is 3827298477.

It is an interprime number because it is at equal distance from previous prime (77489272829) and next prime (77489272831).

It is a super-3 number, since 3×77489272830³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77489272831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2160099 + ... + 2195678.

It is an arithmetic number, because the mean of its divisors is an integer number (5821497297).

Almost surely, 2^77489272830 is an apocalyptic number.

77489272830 is an abundant number, since it is smaller than the sum of its proper divisors (108798640674).

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

77489272830 is a wasteful number, since it uses less digits than its factorization.

77489272830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356380.

The product of its (nonzero) digits is 9483264, while the sum is 57.

The spelling of 77489272830 in words is "seventy-seven billion, four hundred eighty-nine million, two hundred seventy-two thousand, eight hundred thirty".