1561010050120 has 64 divisors (see below), whose sum is σ = 3524195226240. Its totient is φ = 622285171200.

The previous prime is 1561010050043. The next prime is 1561010050121. The reversal of 1561010050120 is 210500101651.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1561010050091 and 1561010050100.

It is not an unprimeable number, because it can be changed into a prime (1561010050121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138837219 + ... + 138848461.

It is an arithmetic number, because the mean of its divisors is an integer number (55065550410).

Almost surely, 2^{1561010050120} is an apocalyptic number.

1561010050120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561010050120 is an abundant number, since it is smaller than the sum of its proper divisors (1963185176120).

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

1561010050120 is a wasteful number, since it uses less digits than its factorization.

1561010050120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22726 (or 22722 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 1561010050120 its reverse (210500101651), we get a palindrome (1771510151771).

The spelling of 1561010050120 in words is "one trillion, five hundred sixty-one billion, ten million, fifty thousand, one hundred twenty".