20534013100 has 36 divisors (see below), whose sum is σ = 44611231504. Its totient is φ = 8203942080.

The previous prime is 20534013061. The next prime is 20534013109. The reversal of 20534013100 is 131043502.

It is a super-2 number, since 2×20534013100² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20534013109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35064 + ... + 205663.

Almost surely, 2^20534013100 is an apocalyptic number.

20534013100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20534013100 is an abundant number, since it is smaller than the sum of its proper divisors (24077218404).

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

20534013100 is a wasteful number, since it uses less digits than its factorization.

20534013100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241594 (or 241587 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 20534013100 its reverse (131043502), we get a palindrome (20665056602).

The spelling of 20534013100 in words is "twenty billion, five hundred thirty-four million, thirteen thousand, one hundred".