1610561101550 has 12 divisors (see below), whose sum is σ = 2995643648976. Its totient is φ = 644224440600.

The previous prime is 1610561101531. The next prime is 1610561101553. The reversal of 1610561101550 is 551011650161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1610561101553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16105610966 + ... + 16105611065.

It is an arithmetic number, because the mean of its divisors is an integer number (249636970748).

Almost surely, 2^{1610561101550} is an apocalyptic number.

1610561101550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1610561101550 is a deficient number, since it is larger than the sum of its proper divisors (1385082547426).

1610561101550 is a wasteful number, since it uses less digits than its factorization.

1610561101550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32211222043 (or 32211222038 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 1610561101550 in words is "one trillion, six hundred ten billion, five hundred sixty-one million, one hundred one thousand, five hundred fifty".