785521138611632 has 20 divisors (see below), whose sum is σ = 1521947648345376. Its totient is φ = 392760455167680.

The previous prime is 785521138611631. The next prime is 785521138611637. The reversal of 785521138611632 is 236116831125587.

It is a happy number.

785521138611632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (785521138611631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88473257 + ... + 96946167.

Almost surely, 2^{785521138611632} is an apocalyptic number.

It is an amenable number.

785521138611632 is a deficient number, since it is larger than the sum of its proper divisors (736426509733744).

785521138611632 is a wasteful number, since it uses less digits than its factorization.

785521138611632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14267276 (or 14267270 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 59.

The spelling of 785521138611632 in words is "seven hundred eighty-five trillion, five hundred twenty-one billion, one hundred thirty-eight million, six hundred eleven thousand, six hundred thirty-two".