77273615064 has 64 divisors (see below), whose sum is σ = 200064672000. Its totient is φ = 24842401920.

The previous prime is 77273615063. The next prime is 77273615077. The reversal of 77273615064 is 46051637277.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77273615063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579219 + ... + 700029.

It is an arithmetic number, because the mean of its divisors is an integer number (3126010500).

Almost surely, 2^77273615064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77273615064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100032336000).

77273615064 is an abundant number, since it is smaller than the sum of its proper divisors (122791056936).

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

77273615064 is a wasteful number, since it uses less digits than its factorization.

77273615064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121768 (or 121764 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 48.

The spelling of 77273615064 in words is "seventy-seven billion, two hundred seventy-three million, six hundred fifteen thousand, sixty-four".