77393211542 has 4 divisors (see below), whose sum is σ = 116089817316. Its totient is φ = 38696605770.

The previous prime is 77393211517. The next prime is 77393211563. The reversal of 77393211542 is 24511239377.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 77393211493 and 77393211502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19348302884 + ... + 19348302887.

It is an arithmetic number, because the mean of its divisors is an integer number (29022454329).

Almost surely, 2^77393211542 is an apocalyptic number.

77393211542 is a deficient number, since it is larger than the sum of its proper divisors (38696605774).

77393211542 is a wasteful number, since it uses less digits than its factorization.

77393211542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38696605773.

The product of its digits is 317520, while the sum is 44.

The spelling of 77393211542 in words is "seventy-seven billion, three hundred ninety-three million, two hundred eleven thousand, five hundred forty-two".