61321621230 has 48 divisors (see below), whose sum is σ = 168814820304. Its totient is φ = 15390524160.

The previous prime is 61321621223. The next prime is 61321621243. The reversal of 61321621230 is 3212612316.

61321621230 is a `hidden beast` number, since 6 + 1 + 3 + 2 + 1 + 621 + 2 + 30 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61321621194 and 61321621203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20038216 + ... + 20041275.

It is an arithmetic number, because the mean of its divisors is an integer number (3516975423).

Almost surely, 2^61321621230 is an apocalyptic number.

61321621230 is an abundant number, since it is smaller than the sum of its proper divisors (107493199074).

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

61321621230 is a wasteful number, since it uses less digits than its factorization.

61321621230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40079521 (or 40079518 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 61321621230 in words is "sixty-one billion, three hundred twenty-one million, six hundred twenty-one thousand, two hundred thirty".