20153024450 has 48 divisors (see below), whose sum is σ = 41029910376. Its totient is φ = 7319116800.

The previous prime is 20153024417. The next prime is 20153024471. The reversal of 20153024450 is 5442035102.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 2139895081 + 18013129369 = 46259^2 + 134213^2 .

It is a super-2 number, since 2×20153024450² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 214487 + ... + 293786.

Almost surely, 2^20153024450 is an apocalyptic number.

20153024450 is an abundant number, since it is smaller than the sum of its proper divisors (20876885926).

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

20153024450 is a wasteful number, since it uses less digits than its factorization.

20153024450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508359 (or 508354 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20153024450 its reverse (5442035102), we get a palindrome (25595059552).

The spelling of 20153024450 in words is "twenty billion, one hundred fifty-three million, twenty-four thousand, four hundred fifty".