20531354405010 has 32 divisors (see below), whose sum is σ = 50083041569472. Its totient is φ = 5385273286080.

The previous prime is 20531354404991. The next prime is 20531354405011. The reversal of 20531354405010 is 1050445313502.

It is a super-2 number, since 2×20531354405010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20531354405011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5609657844 + ... + 5609661503.

It is an arithmetic number, because the mean of its divisors is an integer number (1565095049046).

Almost surely, 2^{20531354405010} is an apocalyptic number.

20531354405010 is an abundant number, since it is smaller than the sum of its proper divisors (29551687164462).

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

20531354405010 is a wasteful number, since it uses less digits than its factorization.

20531354405010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11219319418.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 20531354405010 its reverse (1050445313502), we get a palindrome (21581799718512).

The spelling of 20531354405010 in words is "twenty trillion, five hundred thirty-one billion, three hundred fifty-four million, four hundred five thousand, ten".