61698272828 has 12 divisors (see below), whose sum is σ = 108514551600. Its totient is φ = 30694115232.

The previous prime is 61698272809. The next prime is 61698272833. The reversal of 61698272828 is 82827289616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38754401 + ... + 38755992.

It is an arithmetic number, because the mean of its divisors is an integer number (9042879300).

Almost surely, 2^61698272828 is an apocalyptic number.

It is an amenable number.

61698272828 is a deficient number, since it is larger than the sum of its proper divisors (46816278772).

61698272828 is a wasteful number, since it uses less digits than its factorization.

61698272828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77510596 (or 77510594 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 59.

The spelling of 61698272828 in words is "sixty-one billion, six hundred ninety-eight million, two hundred seventy-two thousand, eight hundred twenty-eight".