772238636450 has 18 divisors (see below), whose sum is σ = 1436375421651. Its totient is φ = 308892969040.

The previous prime is 772238636441. The next prime is 772238636501. The reversal of 772238636450 is 54636832277.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 145087095409 + 627151541041 = 380903^2 + 791929^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=621385.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 772238636392 and 772238636401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6151712 + ... + 6275988.

Almost surely, 2^772238636450 is an apocalyptic number.

772238636450 is a deficient number, since it is larger than the sum of its proper divisors (664136785201).

772238636450 is an frugal number, since it uses more digits than its factorization.

772238636450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248566 (or 124284 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 53.

The spelling of 772238636450 in words is "seven hundred seventy-two billion, two hundred thirty-eight million, six hundred thirty-six thousand, four hundred fifty".