20010055450 has 48 divisors (see below), whose sum is σ = 46402547904. Its totient is φ = 6236899200.

The previous prime is 20010055393. The next prime is 20010055487. The reversal of 20010055450 is 5455001002.

It is a super-2 number, since 2×20010055450² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2594859 + ... + 2602558.

It is an arithmetic number, because the mean of its divisors is an integer number (966719748).

Almost surely, 2^20010055450 is an apocalyptic number.

20010055450 is an abundant number, since it is smaller than the sum of its proper divisors (26392492454).

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

20010055450 is a wasteful number, since it uses less digits than its factorization.

20010055450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5197447 (or 5197442 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

Adding to 20010055450 its reverse (5455001002), we get a palindrome (25465056452).

The spelling of 20010055450 in words is "twenty billion, ten million, fifty-five thousand, four hundred fifty".