77773286460 has 24 divisors (see below), whose sum is σ = 217765202256. Its totient is φ = 20739543040.

The previous prime is 77773286431. The next prime is 77773286489. The reversal of 77773286460 is 6468237777.

It is an interprime number because it is at equal distance from previous prime (77773286431) and next prime (77773286489).

It is a self number, because there is not a number n which added to its sum of digits gives 77773286460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648110661 + ... + 648110780.

It is an arithmetic number, because the mean of its divisors is an integer number (9073550094).

Almost surely, 2^77773286460 is an apocalyptic number.

It is an amenable number.

77773286460 is an abundant number, since it is smaller than the sum of its proper divisors (139991915796).

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

77773286460 is a wasteful number, since it uses less digits than its factorization.

77773286460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296221453 (or 1296221451 counting only the distinct ones).

The product of its (nonzero) digits is 16595712, while the sum is 57.

The spelling of 77773286460 in words is "seventy-seven billion, seven hundred seventy-three million, two hundred eighty-six thousand, four hundred sixty".