77802512278340 has 48 divisors (see below), whose sum is σ = 166798968311808. Its totient is φ = 30473112518784.

The previous prime is 77802512278297. The next prime is 77802512278367. The reversal of 77802512278340 is 4387221520877.

It is a happy number.

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, 72427652 + ... + 73494011.

It is an arithmetic number, because the mean of its divisors is an integer number (3474978506496).

Almost surely, 2^{77802512278340} is an apocalyptic number.

It is an amenable number.

77802512278340 is an abundant number, since it is smaller than the sum of its proper divisors (88996456033468).

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

77802512278340 is a wasteful number, since it uses less digits than its factorization.

77802512278340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145922228 (or 145922226 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 56.

The spelling of 77802512278340 in words is "seventy-seven trillion, eight hundred two billion, five hundred twelve million, two hundred seventy-eight thousand, three hundred forty".