77023232212 has 24 divisors (see below), whose sum is σ = 136005256296. Its totient is φ = 38164697088.

The previous prime is 77023232207. The next prime is 77023232257. The reversal of 77023232212 is 21223232077.

It can be written as a sum of positive squares in 4 ways, for example, as 146797456 + 76876434756 = 12116^2 + 277266^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4374258 + ... + 4391830.

It is an arithmetic number, because the mean of its divisors is an integer number (5666885679).

Almost surely, 2^77023232212 is an apocalyptic number.

It is an amenable number.

77023232212 is a deficient number, since it is larger than the sum of its proper divisors (58982024084).

77023232212 is a wasteful number, since it uses less digits than its factorization.

77023232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27387 (or 27385 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

Adding to 77023232212 its reverse (21223232077), we get a palindrome (98246464289).

The spelling of 77023232212 in words is "seventy-seven billion, twenty-three million, two hundred thirty-two thousand, two hundred twelve".