77348623512 has 64 divisors (see below), whose sum is σ = 194745254400. Its totient is φ = 25600346240.

The previous prime is 77348623511. The next prime is 77348623529. The reversal of 77348623512 is 21532684377.

It is a super-2 number, since 2×77348623512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77348623511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1970962 + ... + 2009822.

It is an arithmetic number, because the mean of its divisors is an integer number (3042894600).

Almost surely, 2^77348623512 is an apocalyptic number.

It is an amenable number.

77348623512 is an abundant number, since it is smaller than the sum of its proper divisors (117396630888).

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

77348623512 is a wasteful number, since it uses less digits than its factorization.

77348623512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39456 (or 39452 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 48.

The spelling of 77348623512 in words is "seventy-seven billion, three hundred forty-eight million, six hundred twenty-three thousand, five hundred twelve".