20531154200 has 48 divisors (see below), whose sum is σ = 47753334960. Its totient is φ = 8209296000.

The previous prime is 20531154191. The next prime is 20531154209. The reversal of 20531154200 is 245113502.

It is an interprime number because it is at equal distance from previous prime (20531154191) and next prime (20531154209).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20531154209) 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, 539810 + ... + 576590.

It is an arithmetic number, because the mean of its divisors is an integer number (994861145).

Almost surely, 2^20531154200 is an apocalyptic number.

20531154200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20531154200 is an abundant number, since it is smaller than the sum of its proper divisors (27222180760).

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

20531154200 is a wasteful number, since it uses less digits than its factorization.

20531154200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39588 (or 39579 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20531154200 its reverse (245113502), we get a palindrome (20776267702).

The spelling of 20531154200 in words is "twenty billion, five hundred thirty-one million, one hundred fifty-four thousand, two hundred".