77634470426 has 8 divisors (see below), whose sum is σ = 116510318400. Its totient is φ = 38797697628.

The previous prime is 77634470359. The next prime is 77634470453. The reversal of 77634470426 is 62407443677.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×77634470426² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9763826 + ... + 9771773.

It is an arithmetic number, because the mean of its divisors is an integer number (14563789800).

Almost surely, 2^77634470426 is an apocalyptic number.

77634470426 is a deficient number, since it is larger than the sum of its proper divisors (38875847974).

77634470426 is a wasteful number, since it uses less digits than its factorization.

77634470426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19537588.

The product of its (nonzero) digits is 4741632, while the sum is 50.

The spelling of 77634470426 in words is "seventy-seven billion, six hundred thirty-four million, four hundred seventy thousand, four hundred twenty-six".