2105653247550 has 72 divisors (see below), whose sum is σ = 5660428735416. Its totient is φ = 561185910720.

The previous prime is 2105653247549. The next prime is 2105653247557. The reversal of 2105653247550 is 557423565012.

It is a happy number.

2105653247550 is a `hidden beast` number, since 2 + 1 + 0 + 5 + 6 + 53 + 2 + 47 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 2105653247496 and 2105653247505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105653247557) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 553069 + ... + 2125368.

Almost surely, 2^{2105653247550} is an apocalyptic number.

2105653247550 is an abundant number, since it is smaller than the sum of its proper divisors (3554775487866).

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

2105653247550 is a wasteful number, since it uses less digits than its factorization.

2105653247550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680202 (or 2680194 counting only the distinct ones).

The product of its (nonzero) digits is 1260000, while the sum is 45.

The spelling of 2105653247550 in words is "two trillion, one hundred five billion, six hundred fifty-three million, two hundred forty-seven thousand, five hundred fifty".