77275307540 has 24 divisors (see below), whose sum is σ = 169333718400. Its totient is φ = 29566204448.

The previous prime is 77275307509. The next prime is 77275307579. The reversal of 77275307540 is 4570357277.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 83994440 + ... + 83995359.

It is an arithmetic number, because the mean of its divisors is an integer number (7055571600).

Almost surely, 2^77275307540 is an apocalyptic number.

It is an amenable number.

77275307540 is an abundant number, since it is smaller than the sum of its proper divisors (92058410860).

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

77275307540 is a wasteful number, since it uses less digits than its factorization.

77275307540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167989831 (or 167989829 counting only the distinct ones).

The product of its (nonzero) digits is 1440600, while the sum is 47.

The spelling of 77275307540 in words is "seventy-seven billion, two hundred seventy-five million, three hundred seven thousand, five hundred forty".