77204410217540 has 48 divisors (see below), whose sum is σ = 166485954727344. Its totient is φ = 30062356070400.

The previous prime is 77204410217521. The next prime is 77204410217593. The reversal of 77204410217540 is 4571201440277.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2256190251844 + 74948219965696 = 1502062^2 + 8657264^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77204410217491 and 77204410217500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326079101 + ... + 326315780.

It is an arithmetic number, because the mean of its divisors is an integer number (3468457390153).

Almost surely, 2^{77204410217540} is an apocalyptic number.

It is an amenable number.

77204410217540 is an abundant number, since it is smaller than the sum of its proper divisors (89281544509804).

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

77204410217540 is a wasteful number, since it uses less digits than its factorization.

77204410217540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652395048 (or 652395046 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 44.

The spelling of 77204410217540 in words is "seventy-seven trillion, two hundred four billion, four hundred ten million, two hundred seventeen thousand, five hundred forty".