20137303550 has 48 divisors (see below), whose sum is σ = 46098945312. Its totient is φ = 6373123200.

The previous prime is 20137303531. The next prime is 20137303553. The reversal of 20137303550 is 5530373102.

It is a super-3 number, since 3×20137303550³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20137303553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2208341 + ... + 2217440.

It is an arithmetic number, because the mean of its divisors is an integer number (960394694).

Almost surely, 2^20137303550 is an apocalyptic number.

20137303550 is an abundant number, since it is smaller than the sum of its proper divisors (25961641762).

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

20137303550 is a wasteful number, since it uses less digits than its factorization.

20137303550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425813 (or 4425808 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 29.

Adding to 20137303550 its reverse (5530373102), we get a palindrome (25667676652).

The spelling of 20137303550 in words is "twenty billion, one hundred thirty-seven million, three hundred three thousand, five hundred fifty".