77786600472020 has 48 divisors (see below), whose sum is σ = 179232099798528. Its totient is φ = 28122533420160.

The previous prime is 77786600471963. The next prime is 77786600472023. The reversal of 77786600472020 is 2027400668777.

It is a happy number.

77786600472020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77786600472023) 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, 1021856324 + ... + 1021932443.

It is an arithmetic number, because the mean of its divisors is an integer number (3734002079136).

Almost surely, 2^{77786600472020} is an apocalyptic number.

It is an amenable number.

77786600472020 is an abundant number, since it is smaller than the sum of its proper divisors (101445499326508).

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

77786600472020 is a wasteful number, since it uses less digits than its factorization.

77786600472020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043788960 (or 2043788958 counting only the distinct ones).

The product of its (nonzero) digits is 11063808, while the sum is 56.

The spelling of 77786600472020 in words is "seventy-seven trillion, seven hundred eighty-six billion, six hundred million, four hundred seventy-two thousand, twenty".