77242240755525 has 24 divisors (see below), whose sum is σ = 127707860208544. Its totient is φ = 41195639534400.

The previous prime is 77242240755503. The next prime is 77242240755529. The reversal of 77242240755525 is 52555704224277.

It is not a de Polignac number, because 77242240755525 - 2⁷ = 77242240755397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77242240755529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11721270 + ... + 17084280.

Almost surely, 2^{77242240755525} is an apocalyptic number.

77242240755525 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

77242240755525 is a deficient number, since it is larger than the sum of its proper divisors (50465619453019).

77242240755525 is a wasteful number, since it uses less digits than its factorization.

77242240755525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555061 (or 5555056 counting only the distinct ones).

The product of its (nonzero) digits is 54880000, while the sum is 57.

The spelling of 77242240755525 in words is "seventy-seven trillion, two hundred forty-two billion, two hundred forty million, seven hundred fifty-five thousand, five hundred twenty-five".