61950820330 has 16 divisors (see below), whose sum is σ = 127441687680. Its totient is φ = 21240281232.

The previous prime is 61950820319. The next prime is 61950820331. The reversal of 61950820330 is 3302805916.

It is a self number, because there is not a number n which added to its sum of digits gives 61950820330.

It is not an unprimeable number, because it can be changed into a prime (61950820331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442505790 + ... + 442505929.

It is an arithmetic number, because the mean of its divisors is an integer number (7965105480).

Almost surely, 2^61950820330 is an apocalyptic number.

61950820330 is an abundant number, since it is smaller than the sum of its proper divisors (65490867350).

61950820330 is a wasteful number, since it uses less digits than its factorization.

61950820330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885011733.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 61950820330 in words is "sixty-one billion, nine hundred fifty million, eight hundred twenty thousand, three hundred thirty".