775903921064 has 32 divisors (see below), whose sum is σ = 1504308153600. Its totient is φ = 374797724160.

The previous prime is 775903921061. The next prime is 775903921069. The reversal of 775903921064 is 460129309577.

775903921064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 775903920997 and 775903921015.

It is not an unprimeable number, because it can be changed into a prime (775903921061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2519369 + ... + 2810520.

It is an arithmetic number, because the mean of its divisors is an integer number (47009629800).

Almost surely, 2^775903921064 is an apocalyptic number.

It is an amenable number.

775903921064 is a deficient number, since it is larger than the sum of its proper divisors (728404232536).

775903921064 is a wasteful number, since it uses less digits than its factorization.

775903921064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330513 (or 5330509 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 775903921064 in words is "seven hundred seventy-five billion, nine hundred three million, nine hundred twenty-one thousand, sixty-four".