77690047326 has 32 divisors (see below), whose sum is σ = 155615834880. Its totient is φ = 25857426624.

The previous prime is 77690047271. The next prime is 77690047343. The reversal of 77690047326 is 62374009677.

It is a happy number.

It is a super-2 number, since 2×77690047326² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14592501 + ... + 14597823.

It is an arithmetic number, because the mean of its divisors is an integer number (4862994840).

Almost surely, 2^77690047326 is an apocalyptic number.

77690047326 is an abundant number, since it is smaller than the sum of its proper divisors (77925787554).

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

77690047326 is a wasteful number, since it uses less digits than its factorization.

77690047326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8560.

The product of its (nonzero) digits is 2667168, while the sum is 51.

The spelling of 77690047326 in words is "seventy-seven billion, six hundred ninety million, forty-seven thousand, three hundred twenty-six".