10921490450550 has 36 divisors (see below), whose sum is σ = 29342404345020. Its totient is φ = 2912397453360.

The previous prime is 10921490450513. The next prime is 10921490450567. The reversal of 10921490450550 is 5505409412901.

10921490450550 is a `hidden beast` number, since 1 + 0 + 9 + 2 + 1 + 4 + 90 + 4 + 5 + 0 + 550 = 666.

It is a super-2 number, since 2×10921490450550² (a number of 27 digits) contains 22 as substring.

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 = 10921490450496 and 10921490450505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12134988940 + ... + 12134989839.

Almost surely, 2^{10921490450550} is an apocalyptic number.

10921490450550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10921490450550 is an abundant number, since it is smaller than the sum of its proper divisors (18420913894470).

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

10921490450550 is a wasteful number, since it uses less digits than its factorization.

10921490450550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24269978797 (or 24269978789 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 10921490450550 in words is "ten trillion, nine hundred twenty-one billion, four hundred ninety million, four hundred fifty thousand, five hundred fifty".