77755425207242 has 8 divisors (see below), whose sum is σ = 119345536364736. Its totient is φ = 37973579752332.

The previous prime is 77755425207193. The next prime is 77755425207247. The reversal of 77755425207242 is 24270252455777.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×77755425207242² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77755425207247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452066425538 + ... + 452066425709.

It is an arithmetic number, because the mean of its divisors is an integer number (14918192045592).

Almost surely, 2^{77755425207242} is an apocalyptic number.

77755425207242 is a deficient number, since it is larger than the sum of its proper divisors (41590111157494).

77755425207242 is a wasteful number, since it uses less digits than its factorization.

77755425207242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904132851292.

The product of its (nonzero) digits is 76832000, while the sum is 59.

The spelling of 77755425207242 in words is "seventy-seven trillion, seven hundred fifty-five billion, four hundred twenty-five million, two hundred seven thousand, two hundred forty-two".