21531355050410 has 64 divisors (see below), whose sum is σ = 39452593162752. Its totient is φ = 8459119958016.

The previous prime is 21531355050409. The next prime is 21531355050419. The reversal of 21531355050410 is 1405055313512.

It is not an unprimeable number, because it can be changed into a prime (21531355050419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216928154 + ... + 217027386.

It is an arithmetic number, because the mean of its divisors is an integer number (616446768168).

Almost surely, 2^{21531355050410} is an apocalyptic number.

21531355050410 is a deficient number, since it is larger than the sum of its proper divisors (17921238112342).

21531355050410 is a wasteful number, since it uses less digits than its factorization.

21531355050410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100847.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 21531355050410 in words is "twenty-one trillion, five hundred thirty-one billion, three hundred fifty-five million, fifty thousand, four hundred ten".