77606180450 has 18 divisors (see below), whose sum is σ = 144351159651. Its totient is φ = 31041684240.

The previous prime is 77606180441. The next prime is 77606180459. The reversal of 77606180450 is 5408160677.

It is an interprime number because it is at equal distance from previous prime (77606180441) and next prime (77606180459).

It can be written as a sum of positive squares in 5 ways, for example, as 45936062929 + 31670117521 = 214327^2 + 177961^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=196985.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77606180459) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1950152 + ... + 1989548.

Almost surely, 2^77606180450 is an apocalyptic number.

77606180450 is a deficient number, since it is larger than the sum of its proper divisors (66744979201).

77606180450 is an frugal number, since it uses more digits than its factorization.

77606180450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78806 (or 39404 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 77606180450 in words is "seventy-seven billion, six hundred six million, one hundred eighty thousand, four hundred fifty".