77751201454212 has 384 divisors, whose sum is σ = 216123366412800. Its totient is φ = 21446378127360.

The previous prime is 77751201454189. The next prime is 77751201454247. The reversal of 77751201454212 is 21245410215777.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 29262776788 + ... + 29262779444.

It is an arithmetic number, because the mean of its divisors is an integer number (562821266700).

Almost surely, 2^{77751201454212} 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 77751201454212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108061683206400).

77751201454212 is an abundant number, since it is smaller than the sum of its proper divisors (138372164958588).

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

77751201454212 is a wasteful number, since it uses less digits than its factorization.

77751201454212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 1097600, while the sum is 48.

Adding to 77751201454212 its reverse (21245410215777), we get a palindrome (98996611669989).

The spelling of 77751201454212 in words is "seventy-seven trillion, seven hundred fifty-one billion, two hundred one million, four hundred fifty-four thousand, two hundred twelve".