61000120002 has 8 divisors (see below), whose sum is σ = 122000240016. Its totient is φ = 20333373332.

The previous prime is 61000119979. The next prime is 61000120007. The reversal of 61000120002 is 20002100016.

It is a sphenic number, since it is the product of 3 distinct primes.

61000120002 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 61000120002.

It is not an unprimeable number, because it can be changed into a prime (61000120007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5083343328 + ... + 5083343339.

It is an arithmetic number, because the mean of its divisors is an integer number (15250030002).

Almost surely, 2^61000120002 is an apocalyptic number.

61000120002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61000120002 is a wasteful number, since it uses less digits than its factorization.

61000120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10166686672.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 61000120002 its reverse (20002100016), we get a palindrome (81002220018).

It can be divided in two parts, 610001 and 20002, that added together give a triangular number (630003 = T₁₁₂₂).

The spelling of 61000120002 in words is "sixty-one billion, one hundred twenty thousand, two".