77311326452 has 12 divisors (see below), whose sum is σ = 135298632420. Its totient is φ = 38654574336.

The previous prime is 77311326431. The next prime is 77311326473. The reversal of 77311326452 is 25462311377.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (77311326431) and next prime (77311326473).

It can be written as a sum of positive squares in 2 ways, for example, as 13123077136 + 64188249316 = 114556^2 + 253354^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100427 + ... + 405842.

It is an arithmetic number, because the mean of its divisors is an integer number (11274886035).

Almost surely, 2^77311326452 is an apocalyptic number.

It is an amenable number.

77311326452 is a deficient number, since it is larger than the sum of its proper divisors (57987305968).

77311326452 is a wasteful number, since it uses less digits than its factorization.

77311326452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544450 (or 544448 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The spelling of 77311326452 in words is "seventy-seven billion, three hundred eleven million, three hundred twenty-six thousand, four hundred fifty-two".