777077400668 has 24 divisors (see below), whose sum is σ = 1361841280800. Its totient is φ = 387980034048.

The previous prime is 777077400667. The next prime is 777077400677. The reversal of 777077400668 is 866004770777.

It is a happy number.

777077400668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (777077400667) 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, 31784393 + ... + 31808831.

It is an arithmetic number, because the mean of its divisors is an integer number (56743386700).

Almost surely, 2^777077400668 is an apocalyptic number.

It is an amenable number.

777077400668 is a deficient number, since it is larger than the sum of its proper divisors (584763880132).

777077400668 is a wasteful number, since it uses less digits than its factorization.

777077400668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35549 (or 35547 counting only the distinct ones).

The product of its (nonzero) digits is 19361664, while the sum is 59.

The spelling of 777077400668 in words is "seven hundred seventy-seven billion, seventy-seven million, four hundred thousand, six hundred sixty-eight".