77209309060 has 24 divisors (see below), whose sum is σ = 174611822616. Its totient is φ = 28508052480.

The previous prime is 77209308961. The next prime is 77209309069. The reversal of 77209309060 is 6090390277.

It can be written as a sum of positive squares in 4 ways, for example, as 2798198404 + 74411110656 = 52898^2 + 272784^2 .

It is a super-2 number, since 2×77209309060² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77209308998 and 77209309016.

It is not an unprimeable number, because it can be changed into a prime (77209309069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148479181 + ... + 148479700.

It is an arithmetic number, because the mean of its divisors is an integer number (7275492609).

Almost surely, 2^77209309060 is an apocalyptic number.

It is an amenable number.

77209309060 is an abundant number, since it is smaller than the sum of its proper divisors (97402513556).

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

77209309060 is a wasteful number, since it uses less digits than its factorization.

77209309060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296958903 (or 296958901 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 43.

The spelling of 77209309060 in words is "seventy-seven billion, two hundred nine million, three hundred nine thousand, sixty".