10521520345550 has 48 divisors (see below), whose sum is σ = 19583395130112. Its totient is φ = 4205734552800.

The previous prime is 10521520345537. The next prime is 10521520345579. The reversal of 10521520345550 is 5554302512501.

It is a super-2 number, since 2×10521520345550² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496592057 + ... + 496613243.

It is an arithmetic number, because the mean of its divisors is an integer number (407987398544).

Almost surely, 2^{10521520345550} is an apocalyptic number.

10521520345550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10521520345550 is a deficient number, since it is larger than the sum of its proper divisors (9061874784562).

10521520345550 is a wasteful number, since it uses less digits than its factorization.

10521520345550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27513 (or 27508 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 10521520345550 in words is "ten trillion, five hundred twenty-one billion, five hundred twenty million, three hundred forty-five thousand, five hundred fifty".