61843178328 has 32 divisors (see below), whose sum is σ = 155720241600. Its totient is φ = 20466086688.

The previous prime is 61843178249. The next prime is 61843178333. The reversal of 61843178328 is 82387134816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9265726 + ... + 9272397.

It is an arithmetic number, because the mean of its divisors is an integer number (4866257550).

Almost surely, 2^61843178328 is an apocalyptic number.

It is an amenable number.

61843178328 is an abundant number, since it is smaller than the sum of its proper divisors (93877063272).

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

61843178328 is a wasteful number, since it uses less digits than its factorization.

61843178328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18538271 (or 18538267 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The spelling of 61843178328 in words is "sixty-one billion, eight hundred forty-three million, one hundred seventy-eight thousand, three hundred twenty-eight".