77024230651212 has 96 divisors (see below), whose sum is σ = 199821101297664. Its totient is φ = 22931862739200.

The previous prime is 77024230651073. The next prime is 77024230651223. The reversal of 77024230651212 is 21215603242077.

It is a super-2 number, since 2×77024230651212² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31618513 + ... + 33967319.

It is an arithmetic number, because the mean of its divisors is an integer number (2081469805184).

Almost surely, 2^{77024230651212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77024230651212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99910550648832).

77024230651212 is an abundant number, since it is smaller than the sum of its proper divisors (122796870646452).

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

77024230651212 is a wasteful number, since it uses less digits than its factorization.

77024230651212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355639 (or 2355637 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

Adding to 77024230651212 its reverse (21215603242077), we get a palindrome (98239833893289).

The spelling of 77024230651212 in words is "seventy-seven trillion, twenty-four billion, two hundred thirty million, six hundred fifty-one thousand, two hundred twelve".