1561032325140 has 48 divisors (see below), whose sum is σ = 4600937382720. Its totient is φ = 394366060800.

The previous prime is 1561032325133. The next prime is 1561032325187. The reversal of 1561032325140 is 415232301651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684662161 + ... + 684664440.

It is an arithmetic number, because the mean of its divisors is an integer number (95852862140).

Almost surely, 2^{1561032325140} is an apocalyptic number.

1561032325140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561032325140 is an abundant number, since it is smaller than the sum of its proper divisors (3039905057580).

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

1561032325140 is a wasteful number, since it uses less digits than its factorization.

1561032325140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369326632 (or 1369326630 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 1561032325140 its reverse (415232301651), we get a palindrome (1976264626791).

The spelling of 1561032325140 in words is "one trillion, five hundred sixty-one billion, thirty-two million, three hundred twenty-five thousand, one hundred forty".