77841800348 has 48 divisors (see below), whose sum is σ = 152122256160. Its totient is φ = 34605446400.

The previous prime is 77841800329. The next prime is 77841800357. The reversal of 77841800348 is 84300814877.

It is a super-2 number, since 2×77841800348² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77841800296 and 77841800305.

It is a congruent 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, 573563 + ... + 696173.

It is an arithmetic number, because the mean of its divisors is an integer number (3169213670).

Almost surely, 2^77841800348 is an apocalyptic number.

It is an amenable number.

77841800348 is a deficient number, since it is larger than the sum of its proper divisors (74280455812).

77841800348 is a wasteful number, since it uses less digits than its factorization.

77841800348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123078 (or 123076 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 50.

The spelling of 77841800348 in words is "seventy-seven billion, eight hundred forty-one million, eight hundred thousand, three hundred forty-eight".