61002120302120 has 32 divisors (see below), whose sum is σ = 137829058444800. Its totient is φ = 24298752518208.

The previous prime is 61002120302087. The next prime is 61002120302161. The reversal of 61002120302120 is 2120302120016.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 61002120302092 and 61002120302101.

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, 3190477904 + ... + 3190497023.

It is an arithmetic number, because the mean of its divisors is an integer number (4307158076400).

Almost surely, 2^{61002120302120} is an apocalyptic number.

It is an amenable number.

61002120302120 is an abundant number, since it is smaller than the sum of its proper divisors (76826938142680).

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

61002120302120 is a wasteful number, since it uses less digits than its factorization.

61002120302120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380975177 (or 6380975173 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 61002120302120 its reverse (2120302120016), we get a palindrome (63122422422136).

The spelling of 61002120302120 in words is "sixty-one trillion, two billion, one hundred twenty million, three hundred two thousand, one hundred twenty".