77507530450012 has 24 divisors (see below), whose sum is σ = 146263831669872. Its totient is φ = 35725698844800.

The previous prime is 77507530450001. The next prime is 77507530450013. The reversal of 77507530450012 is 21005403570577.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77507530450013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979283314 + ... + 979362457.

It is an arithmetic number, because the mean of its divisors is an integer number (6094326319578).

Almost surely, 2^{77507530450012} is an apocalyptic number.

It is an amenable number.

77507530450012 is a deficient number, since it is larger than the sum of its proper divisors (68756301219860).

77507530450012 is a wasteful number, since it uses less digits than its factorization.

77507530450012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958646549 (or 1958646547 counting only the distinct ones).

The product of its (nonzero) digits is 1029000, while the sum is 46.

The spelling of 77507530450012 in words is "seventy-seven trillion, five hundred seven billion, five hundred thirty million, four hundred fifty thousand, twelve".