20120452450 has 24 divisors (see below), whose sum is σ = 42770333952. Its totient is φ = 6898440720.

The previous prime is 20120452427. The next prime is 20120452489. The reversal of 20120452450 is 5425402102.

It is a super-2 number, since 2×20120452450² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 11 ways as a sum of consecutive naturals, for example, 28743154 + ... + 28743853.

It is an arithmetic number, because the mean of its divisors is an integer number (1782097248).

Almost surely, 2^20120452450 is an apocalyptic number.

20120452450 is an abundant number, since it is smaller than the sum of its proper divisors (22649881502).

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

20120452450 is a wasteful number, since it uses less digits than its factorization.

20120452450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57487026 (or 57487021 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 20120452450 its reverse (5425402102), we get a palindrome (25545854552).

The spelling of 20120452450 in words is "twenty billion, one hundred twenty million, four hundred fifty-two thousand, four hundred fifty".