20045451055 has 16 divisors (see below), whose sum is σ = 27533689344. Its totient is φ = 13724059680.

The previous prime is 20045451053. The next prime is 20045451061. The reversal of 20045451055 is 55015454002.

It is not a de Polignac number, because 20045451055 - 2¹ = 20045451053 is a prime.

It is a super-2 number, since 2×20045451055² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045451053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422851 + ... + 467860.

It is an arithmetic number, because the mean of its divisors is an integer number (1720855584).

Almost surely, 2^20045451055 is an apocalyptic number.

20045451055 is a deficient number, since it is larger than the sum of its proper divisors (7488238289).

20045451055 is an equidigital number, since it uses as much as digits as its factorization.

20045451055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891366.

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 20045451055 in words is "twenty billion, forty-five million, four hundred fifty-one thousand, fifty-five".